The use of fetal tissue caused a lot of controversy in the United States

Month, Lishan Su will receive is from the California company's keep small tube. There is a 14 to 19 weeks of pregnancy aborted fetuses liver.

Su University of North Carolina at Chapel Hill and colleagues carefully grind the liver, using a centrifuge to separate, then extract and refine the liver and blood forming stem cells. The researchers injected these cells of newborn mice liver, and let them mature. Animal thus obtained is the sole owner of the normal operation of the human liver and immune cells humanized mouse. Therefore, Su, they are in about the value of hepatitis B and hepatitis C research work is immeasurable - can explore how viruses invade the human immune system and lead to chronic liver disease.

"The use of fetal tissue is not a simple choice, but so far there is no better choice." Try to use other techniques to cultivate a humanized mouse but ultimately failed Su said that many biomedical researchers rely on fetal tissue to save human lives. "I think a lot of people's feelings and I are the same."

Secret video sparked uproar

Since July this year, an explosive atmosphere against the United States arising from fetal tissue research has not dispersed. At that time anti-abortion organization in California called "Medical Progress Center" released a secretly filmed video - on the inside, senior doctors Planned Parenthood Federation of America naked, coldly talking about how they obtain and use abortion fetal organ on research. IPPF is a provider of health care for women non-profit organization, it received $ 528 million of government funding in 2014, most of them for reimbursement contraception, cancer screening and other services. In the Federation under the 700 clinics, about half had the abortion clinic, which accounted for 30% of its services. There are few clinics in both states will also apply for fetal tissue for research.

Video provoked uproar, and intensified in the past few weeks. December 3, by the Republican leadership of the United States Senate voted to cancel funding for Planned Parenthood Federation's decision, despite the fact that fetal tissue research is legal - in the past few decades, the US National Institutes of Health (NIH) has been financing; President Obama is determined to veto the bill if the bill can be sent to his table. After a few days of November 27, a gunman killed Colorado Springs City Planned Parenthood clinic belongs to three people.