Facebook Suppression of Conservatives Revealed

Former Facebook Workers: We Routinely Suppressed Conservative News

Gizmodo: Facebook workers routinely suppressed news stories of interest to conservative readers from the social network’s influential “trending” news section, according to a former journalist who worked on the project. This individual says that workers prevented stories about the right-wing CPAC gathering, Mitt Romney, Rand Paul, and other conservative topics from appearing in the highly-influential section, even though they were organically trending among the site’s users.

Several former Facebook “news curators,” as they were known internally, also told Gizmodo that they were instructed to artificially “inject” selected stories into the trending news module, even if they weren’t popular enough to warrant inclusion—or in some cases weren’t trending at all. The former curators, all of whom worked as contractors, also said they were directed not to include news about Facebook itself in the trending module.

In other words, Facebook’s news section operates like a traditional newsroom, reflecting the biases of its workers and the institutional imperatives of the corporation. Imposing human editorial values onto the lists of topics an algorithm spits out is by no means a bad thing—but it is in stark contrast to the company’s claims that the trending module simply lists “topics that have recently become popular on Facebook.”

Related reading: I Asked a Privacy Lawyer What Facebook’s New Terms and Conditions Will Mean for You

These new allegations emerged after Gizmodo last week revealed details about the inner workings of Facebook’s trending news team—a small group of young journalists, primarily educated at Ivy League or private East Coast universities, who curate the “trending” module on the upper-right-hand corner of the site. As we reported last week, curators have access to a ranked list of trending topics surfaced by Facebook’s algorithm, which prioritizes the stories that should be shown to Facebook users in the trending section. The curators write headlines and summaries of each topic, and include links to news sites. The section, which launched in 2014, constitutes some of the most powerful real estate on the internet and helps dictate what news Facebook’s users—167 million in the US alone—are reading at any given moment.

“Depending on who was on shift, things would be blacklisted or trending,” said the former curator. This individual asked to remain anonymous, citing fear of retribution from the company. The former curator is politically conservative, one of a very small handful of curators with such views on the trending team. “I’d come on shift and I’d discover that CPAC or Mitt Romney or Glenn Beck or popular conservative topics wouldn’t be trending because either the curator didn’t recognize the news topic or it was like they had a bias against Ted Cruz.”

The former curator was so troubled by the omissions that they kept a running log of them at the time; this individual provided the notes to Gizmodo. Among the deep-sixed or suppressed topics on the list: former IRS official Lois Lerner, who was accused by Republicans of inappropriately scrutinizing conservative groups; Wisconsin Gov. Scott Walker; popular conservative news aggregator the Drudge Report; Chris Kyle, the former Navy SEAL who was murdered in 2013; and former Fox News contributor Steven Crowder. “I believe it had a chilling effect on conservative news,” the former curator said.

Another former curator agreed that the operation had an aversion to right-wing news sources. “It was absolutely bias. We were doing it subjectively. It just depends on who the curator is and what time of day it is,” said the former curator. “Every once in awhile a Red State or conservative news source would have a story. But we would have to go and find the same story from a more neutral outlet that wasn’t as biased.”

Stories covered by conservative outlets (like Breitbart, Washington Examiner, and Newsmax) that were trending enough to be picked up by Facebook’s algorithm were excluded unless mainstream sites like the New York Times, the BBC, and CNN covered the same stories.

Other former curators interviewed by Gizmodo denied consciously suppressing conservative news, and we were unable to determine if left-wing news topics or sources were similarly suppressed. The conservative curator described the omissions as a function of his colleagues’ judgements; there is no evidence that Facebook management mandated or was even aware of any political bias at work.

Managers on the trending news team did, however, explicitly instruct curators to artificially manipulate the trending module in a different way: When users weren’t reading stories that management viewed as important, several former workers said, curators were told to put them in the trending news feed anyway. Several former curators described using something called an “injection tool” to push topics into the trending module that weren’t organically being shared or discussed enough to warrant inclusion—putting the headlines in front of thousands of readers rather than allowing stories to surface on their own. In some cases, after a topic was injected, it actually became the number one trending news topic on Facebook.

“We were told that if we saw something, a news story that was on the front page of these ten sites, like CNN, the New York Times, and BBC, then we could inject the topic,” said one former curator. “If it looked like it had enough news sites covering the story, we could inject it—even if it wasn’t naturally trending.” Sometimes, breaking news would be injected because it wasn’t attaining critical mass on Facebook quickly enough to be deemed “trending” by the algorithm. Former curators cited the disappearance of Malaysia Airlines flight MH370 and the Charlie Hebdo attacks in Paris as two instances in which non-trending stories were forced into the module. Facebook has struggled to compete with Twitter when it comes to delivering real-time news to users; the injection tool may have been designed to artificially correct for that deficiency in the network. “We would get yelled at if it was all over Twitter and not on Facebook,” one former curator said.

In other instances, curators would inject a story—even if it wasn’t being widely discussed on Facebook—because it was deemed important for making the network look like a place where people talked about hard news. “People stopped caring about Syria,” one former curator said. “[And] if it wasn’t trending on Facebook, it would make Facebook look bad.” That same curator said the Black Lives Matter movement was also injected into Facebook’s trending news module. “Facebook got a lot of pressure about not having a trending topic for Black Lives Matter,” the individual said. “They realized it was a problem, and they boosted it in the ordering. They gave it preference over other topics. When we injected it, everyone started saying, ‘Yeah, now I’m seeing it as number one’.” This particular injection is especially noteworthy because the #BlackLivesMatter movement originated on Facebook, and the ensuing media coverage of the movement often noted its powerful social media presence.

(In February, CEO Mark Zuckerberg expressed his support for the movement in an internal memo chastising Facebook employees for defacing Black Lives Matter slogans on the company’s internal “signature wall.”)

When stories about Facebook itself would trend organically on the network, news curators used less discretion—they were told not to include these stories at all. “When it was a story about the company, we were told not to touch it,” said one former curator. “It had to be cleared through several channels, even if it was being shared quite a bit. We were told that we should not be putting it on the trending tool.”

(The curators interviewed for this story worked for Facebook across a timespan ranging from mid-2014 to December 2015.)

“We were always cautious about covering Facebook,” said another former curator. “We would always wait to get second level approval before trending something to Facebook. Usually we had the authority to trend anything on our own [but] if it was something involving Facebook, the copy editor would call their manager, and that manager might even call their manager before approving a topic involving Facebook.”

Gizmodo reached out to Facebook for comment about each of these specific claims via email and phone, but did not receive a response.

Several former curators said that as the trending news algorithm improved, there were fewer instances of stories being injected. They also said that the trending news process was constantly being changed, so there’s no way to know exactly how the module is run now. But the revelations undermine any presumption of Facebook as a neutral pipeline for news, or the trending news module as an algorithmically-driven list of what people are actually talking about.

Rather, Facebook’s efforts to play the news game reveal the company to be much like the news outlets it is rapidly driving toward irrelevancy: a select group of professionals with vaguely center-left sensibilities. It just happens to be one that poses as a neutral reflection of the vox populi, has the power to influence what billions of users see, and openly discusses whether it should use that power to influence presidential elections.

“It wasn’t trending news at all,” said the former curator who logged conservative news omissions. “It was an opinion.”

[Disclosure: Facebook has launched a program that pays publishers, including the New York Times and Buzzfeed, to produce videos for its Facebook Live tool. Gawker Media, Gizmodo’s parent company, recently joined that program.]

 

$600 Billion, Failing Classrooms

US Spends $600 Billion/Year on Education, But Large Majority of H.S. Seniors Not College-Ready

Hollingsworth/(CNSNews.com) – Despite the fact that the U.S. spends more than $600 billion per year on public education, a large majority of high school seniors are not ready for college-level work in math and reading, according to the latest results of the 2015 National Assessment of Educational Progress (NAEP), also known as “the nation’s report card”.

Demonstrating proficiency in a core subject like math or reading is considered proof of being academically prepared for college-level courses.

However, just 25 percent of 12th graders tested “Proficient” or above in math on the 2015 NAEP, down slightly from the 26 percent reported in 2013.

That means that three-quarters of the nation’s soon-to-be-graduating high school seniors are not prepared to succeed in college math courses.

Although more 12th graders (37 percent) tested “Proficient” or above in reading, that figure was also down one percent from the 2013 results.

According to NAEP, nearly two-thirds of high seniors do not have the written language skills they will need in college.

The average score of the 31,900 12th graders who took the 2015 NAEP math test was 152, which was down in all four content areas and one point lower than the average score (153) in 2013, Peggy Carr, acting commissioner of the National Center for Education Statistics (NCES), told reporters during a webinar on Wednesday announcing the latest NAEP results.

Only three percent of those taking the math assessment tested “Advanced.” Another 22 percent tested “Proficient”, with 37 percent of test-takers demonstrating a “Basic” mastery of mathematics.

However, the largest contingent – 38 percent – tested at the lowest “Below Basic” level. “There is a larger proportion of students at the bottom of the distribution” than in 2013, Carr acknowledged.

English Language Learners, who posted a six-point gain, were the only student sub-group to significantly increase their math scores over 2013 levels, she pointed out.

The average score in reading (287) was not significantly different from the average score reported in 2013 (288), Carr said.

Six percent of high school seniors scored in the “Advanced” reading category, with 31 percent testing “Proficient”, and 35 percent scoring in the “Basic” range.

However, 28 percent failed to demonstrate even basic mastery of the written word – three percent more than in 2013.

Carr noted that the 2015 NAEP results remained virtually unchanged for various racial and ethnic sub-groups compared to 2013. In general, white and Hispanic males tended to do better on the math tests, while females overall did better on the reading assessments, she pointed out.

Education experts also noted that average math scores were higher for students who took more challenging pre-calculus and calculus classes, and average reading scores were the highest for students who reported reading more than 20 pages of text a day in school or while doing their homework assignments.

When CNSNews.com asked how the latest reading and math NAEP scores compared to student test scores worldwide, Carr replied that “we will wait to see” when the next international results are released in November and December.

According to the latest available figures from NCES, “the 50 states and D.C. reported $603.7 billion in funding collected for public elementary and secondary education in 2013.”

State and local governments provided 91 percent of all education funding, while the federal government paid the remaining 9 percent.

*****

Don’t go away yet, there is more and it is worse.

Obama budgets $17,613 for every new illegal minor, more than Social Security retirees get

Paul Bedard, the Washington Examiner: President Obama has budgeted $17,613 for each of the estimated 75,000 Central American teens expected to illegally cross into the United States this year, $2,841 more than the average annual Social Security retirement benefit, according to a new report.

The total bill to taxpayers: $1.3 billion in benefits to “unaccompanied children,” more than double what the federal government spent in 2010, according to an analysis of the administration’s programs for illegal minors from the Center for Immigration Studies. The average Social Security retirement benefit is $14,772.

The report notes that the president’s budget, facing congressional approval, includes another $2.1 billion for refugees, which can include the illegals from Central America, mostly Honduras, Guatemala and El Salvador.

What’s more, the administration is also spending heavily on a program with the United Nations to help the illegal minors avoid the dangerous trip by declaring them refugees and handing them a plane ticket to the U.S. where, once here, they get special legal status.

The report, titled “Welcoming Unaccompanied Alien Children to the United States,” is a deep dive into the administration’s evolving efforts to let hundreds of thousands of mostly 16- and 17-year-old males settle in the country.

It said that most of the undocumented minors do not qualify for refugee status or are even in any danger in their native countries. Instead, they are seeking to unify with their family members, commonly parents in the United States illegally.

The report cited Department of Health and Human Services data showing the trend. “New data,” said CIS, “shows that 80 percent of the 71,000 Central American children placed between February 2014 and September 2015 were released to sponsors who are in the United States illegally.”

Go here for charts and full report.

Author Nayla Rush suggested that the administration’s Central American Refugee/Parole Program with the United Nations that declares minors refugees could have the effect of giving legal status to their illegal parents once in the U.S.

“Children will be able to qualify for refugee status and then be flown to the United States. As a reminder, refugees receive automatic legal status and are required to apply for a green card within their first year following arrival. They can apply for citizenship five years from the date of entry.

“Since parents from Central America illegally present in the United States could not benefit from the CAM program and sponsor their children, perhaps the reverse can take place with children admitted under this new version of the refugee program. Children, acquiring legal status followed by naturalization by the time they reach adulthood, could indeed sponsor their parents,” wrote Rush.

 

AmeriCorps: Broke the Rules with ‘abortion doulas’

AmeriCorps’ abortion escorts broke federal rules

TheHill: Several members of the national service program AmeriCorps recently escorted young pregnant women to abortion clinics in a “direct violation” of federal funding rules, a government watchdog will report Tuesday.

The volunteers served as clinic escorts, also known as “abortion doulas,” in parts of New York City, according to a source familiar with the report from a federal inspector general’s office. A summary of the report will be published online Tuesday.

In their roles, such volunteers provide emotional support to women seeking abortions, as well as transportation to and from the clinics if needed. That service is prohibited under the language of federal grants that helps fund the program, the source said.

The violation took place among “a few volunteer members” at one of the 38 community health centers that works with AmeriCorps’s health branch, according to a statement from the National Association of Community Health Centers (NACHC), which oversees AmeriCorps’ health volunteers.

Dave Taylor, chief operating officer of NACHC, said in a statement to The Hill that the group’s leadership “self-reported the issue to the proper authorities” immediately after learning about the potential violations.

“We take this matter seriously,” Taylor said, adding that the NACHC has cooperated with the White House’s community service office and the watchdog group throughout the investigation. He declined to provide any details about the investigation, but said his organization had received a copy of the full report.

The group said its response to the investigation has been far-reaching. Taylor said it quickly took steps to stop the program, while also requiring program staff to be retrained on “all relevant rules and regulations related to AmeriCorps prohibited activities.”

“We moved immediately to cease the activity in question, and suspended the identified site’s AmeriCorps members for a period until they and their site supervisors were retrained and revised member service contracts were reviewed and signed,” Taylor wrote in a statement.

The group also revised the contracts of 500 other partners “to prevent future misinterpretations.”

AmeriCorps is a federally funded community service program with about 80,000 volunteers nationally. The program is managed by the White House Corporation for National and Community Service, which received about $1.1 billion in federal funds last year.

**** In 2009, AllGov: Abortion Referral Prohibited for AmeriCorps

AmeriCorps became the center of media attention when the Edward M. Kennedy Serve America Act passed, tripling AmeriCorps’ size and allotting $5.7 billion in federal funding for the community service programs it provides. Few news sources noticed one controversial stipulation that was added to the bill: the prohibition of several activities, among them, abortion referral.

Beginning on October 1, AmeriCorps’ staff and members will be prohibited from “providing abortion services or referrals for receipt of such services.” In the past, AmeriCorps members have joined with clinics that offer abortion services and partnered with Planned Parenthood chapters to work on public health education topics. The new stipulation will allow members to volunteer or provide their services on their own time, but not while affiliated with AmeriCorps, itself.
Also included in the list of prohibited activities: engaging in protests, petitions, boycotts, or strikes; assisting, promoting, or deterring union organization; engaging in religious instruction and conducting worship services.

Comrade Ayatollah, it Always Points Back to Russia/USSR

 

“Is Iran’s Supreme Leader Ayatollah Ali Khamenei a graduate of the Patrice Lumumba People’s Friendship University in Moscow? Did the KGB recruit Khamenei as a spy in the 1960’s? Is Soviet indoctrination and ideological training to blame for Khamenei’s hatred of the United States? The Persian blogosphere is boiling over with speculations about Khamenei’s alleged Soviet connections. The affair started Wednesday, as Iranian bloggers discovered Russia Today’s February 5, 2010 report on the 50th anniversary of the People’s Friendship University in Moscow, in which Khamenei is mentioned among the university’s “most notable graduates.” A claim also appears on Russia Today’s website, although the reference is made to “Iran’s Supreme Leader Ali Khomeini,” an obvious mistake. Subsequently, Iranian bloggers identified other Russian sources making the very same claim: The November 25, 2003 issue of Kommersant presents Khamenei as a People’s Friendship University graduate…………….”

Patrice Lumumba University was named after the murdered first Congolese prime minister after independence from Belgium. Lumumba was allegedly killed by Congolese rivals and Western intelligence services. I believe that to be true: Lumumba was perceived as a ‘communist’ by the West during the peak of the Cold War. The Soviet university attracted many third world students, and it is possible that a young Khamenei was among them, but it is highly unlikely. I doubt it very much: he must have started as a student of Islamic faith at a young age. Or maybe he was groomed as a communist mole inside Qom, a potential Manchurian Ayatollah. If true this would mean that Khamenei also speaks Russian in addition to Persian, Arabic, and Turkish. He is as much a communist as the Saudi Mufti is a secret Shi’a, as much as Bashar al-Assad is a Salafi.

  

Introduction:

For close to a century, destiny has played a bitter game with our ancient homeland. The winds of bizarre events have left us Iranians in a historical abeyance. Addicted to our shared agony and engrossed in our daily demise, we have even lost the ability to ponder the starting point of this common grief. Perhaps if our fathers sought out the root of this shared agony, a feasible solution would have emerged. What you are about to read is the result of two decades of chasing after questions that have perplexed me for half of my life. Finally when I started writing this book four years ago, I anticipated many possible outcomes. I expected this book to evolve into the biography of a ruthless dictator or the discovery of an old Soviet espionage network. But in my wildest dreams I could not have imagined that Comrade Ayatollah would turn into perhaps one of the largest research collections that sheds light on the darkest political and criminal dossiers in Iranian history. Today I declare with certainty that I have identified the root of the historical agony of our people and I have no doubt that all those who follow me on this journey to the conclusion of the book will acquire a new viewpoint on what has come to pass in our nation during the past century. The key to identifying the root cause of this shared agony lies not in our country but far away in the heart of Iran’s Northern neighbor — in the vast nation of Russia. The same place where in 1905 sparks of revolution were ignited in Tsarist Russia. Twelve years later, the flames of the Bolshevik Revolution at first engulfed the people of this expansive country and then spread to ancient Iran and other parts of the world to reduce their history, culture and identity to ashes.

Comrade Ayatollah investigates in ten chapters documents related to the pivotal role of the Soviet Union’s security agency in the planning and execution of the Islamic Revolution of 1979 and this terrifying organization’s subsequent covert facilitation of the ascent of Seyed Ali Khamenei to the position of Absolute Supreme Leader in Iran. In each of these ten chapters you will encounter one of the hidden secrets and terrifying mysteries in the history of the Islamic Revolution. While deciphering these enigmas, I also provide material for independent research and a suggested topic for case studies.

The first chapter is a review of the history of the Cold War the origins of which can be traced back to the rivalry between two victors of World War I — the Russians and the British — for the control of the partitioned Ottoman territory. The Ottomans were the big losers of the war and the most prized spoils of war left behind by their defeated army were the historic lands of the Middle East and North Africa. The Bolshevik Revolution that coincided with the end of World War I kept the Russians from controlling a part of this valuable territory and thus Great Britain and France remained the two powers that won control over the lion’s share of the Middle East. After the 1917 revolution and the establishment of the Soviet Union, the Russians once again began eyeing territories outside the boundaries of this newly established empire.

Their creeping influence accelerated in the former Ottoman territories, from Mesopotamia to Palestine and from Morocco to Egypt. With the advent of World War II, the Russian and the British armies entered Iran from the north and south, respectively, and occupied the entire country with the excuse that Iran was a supporter of Nazi Germany. The clandestine influx of the Soviet intelligence service’s spies and agents under the guise of the Red Army provided the opportunity for the Russians to penetrate all strata of society in the broad geographical expanse of Iran. At the end of World War II, the British army immediately began to withdraw. The Soviet Red Army months later under international pressure especially from the United States withdrew, but its intelligence service’s spies never left Iran. The result of their three-decade long operations in Iran to  recruit and train elements loyal to the Soviet Union was the December 1979 Islamic Revolution. What transpired during this bitter era in Iran, the Middle East and North Africa has been depicted in this chapter.

The second chapter details the names of some of the powerful political figures who were trained in Moscow by the Soviet intelligence service for the roles they would play during the days leading up to the revolution and the years that followed, along with their respective biographies highlighting the services they rendered to the Russians. All this information is based on secret documents that are published for the first time in this book. We will see that all three influential factions in the Islamic Republic’s closed political circle in the past three decades have been in the service of Soviet intelligence. Seyed Ali Khamenei who leads the conservative or hardliners’ faction, Seyed Mohammad Moussavi Khoeiniha who is the spiritual father of the Reformist faction, and some of Mahmoud Amadinejad’s closest advisors including Kamran Daneshjoo, Mahmoud Mollabashi and Arsalan Ghorbani who comprise the neo-conservative faction are all graduates of the Patrice Lumumba University in Moscow, the official international spy training center for the Russians since 1960.

Read more here if you have the courage for history.

PP Organ Sales, Pure Profit, Congressional Hearing

Report: Planned Parenthood Organ Sales Are ‘Pure Profit’

Congressional panel says abortionists incur no costs for organ harvesting

FreeBeacon: Planned Parenthood abortion clinics profit from the sale of aborted baby organs, according to new documents released by a congressional committee investigating the organization’s practices.

The U.S. House Select Panel on Infant Lives released a preview of its findings after a months-long review of internal documents obtained from the nation’s top abortionist, as well as organ procurement companies and buyers. The panel concluded that abortion clinics incur no additional costs in harvesting organs obtained from an already-aborted baby and that the sale or transfer of those organs represented “pure profit” for the clinic.

“The [abortion clinic] has no costs so the payments from the [procurement business] to the [abortion clinic] are pure profit,” the report concludes. “All costs are born by the [procurement business] or the customer. The payments from the customer to the PB exceed its cost by a factor of 300 to 400 percent.”

Pro-life activists said those practices run counter to federal law, which bars clinics from profiting off of the sale of baby body parts.

“The abortion industry sells baby hearts, livers, brains, hands and other organs procured by a middleman company inside their facilities at no cost or effort to the facilities themselves. The facility receives upfront fees that can amount to five-figure sums every month and then the procurement companies resell organs for tens of thousands more—depending on the child’s characteristics,” Marjorie Dannenfelser, president of the Susan B. Anthony List, said in a release.The documents make clear there is absolutely no cost to the abortion clinic so that all monies received go to their bottom line.”

The scandal began after investigators with the pro-life Center for Medical Progress released a series of videos capturing top Planned Parenthood officials discussing the group’s fetal organ sales in the summer of 2015. One top official was caught on camera saying that clinics generate a “fair amount of income” from the sales.

The committee’s conclusions stand in contrast to Planned Parenthood’s repeated denials that it made any money from the sale of organs. The group claimed that all payments were to recoup costs. The abortionist announced last year it would no longer accept any payments from researchers or procurement companies for baby body parts.

Planned Parenthood did not return a request for comment.

The congressional panel will hold a hearing Wednesday morning to discuss the report.

***** The law: 42 U.S. Code § 289g–2 – Prohibitions regarding human fetal tissue

(a) Purchase of tissue

It shall be unlawful for any person to knowingly acquire, receive, or otherwise transfer any human fetal tissue for valuable consideration if the transfer affects interstate commerce.
(b) Solicitation or acceptance of tissue as directed donation for use in transplantation

It shall be unlawful for any person to solicit or knowingly acquire, receive, or accept a donation of human fetal tissue for the purpose of transplantation of such tissue into another person if the donation affects interstate commerce, the tissue will be or is obtained pursuant to an induced abortion, and—
(1) the donation will be or is made pursuant to a promise to the donating individual that the donated tissue will be transplanted into a recipient specified by such individual;
(2) the donated tissue will be transplanted into a relative of the donating individual; or
(3) the person who solicits or knowingly acquires, receives, or accepts the donation has provided valuable consideration for the costs associated with such abortion.
(c) Solicitation or acceptance of tissue from fetuses gestated for research purposes

It shall be unlawful for any person or entity involved or engaged in interstate commerce to—
(1) solicit or knowingly acquire, receive, or accept a donation of human fetal tissue knowing that a human pregnancy was deliberately initiated to provide such tissue; or
(2) knowingly acquire, receive, or accept tissue or cells obtained from a human embryo or fetus that was gestated in the uterus of a nonhuman animal.
(d) Criminal penalties for violations

(1) In general

Any person who violates subsection (a), (b), or (c) shall be fined in accordance with title 18, subject to paragraph (2), or imprisoned for not more than 10 years, or both.
(2) Penalties applicable to persons receiving consideration

With respect to the imposition of a fine under paragraph (1), if the person involved violates subsection (a) or (b)(3), a fine shall be imposed in an amount not less than twice the amount of the valuable consideration received.
(e) Definitions

For purposes of this section:
(1) The term “human fetal tissue” has the meaning given such term in section 289g–1 (g) of this title.
(2) The term “interstate commerce” has the meaning given such term in section 321 (b) of title 21.
(3) The term “valuable consideration” does not include reasonable payments associated with the transportation, implantation, processing, preservation, quality control, or storage of human fetal tissue.