1.   Thirty years ago, a national commission chaired by Kenneth Ryan produced guidelines for research on living human fetuses.

2.   Indeed, if the developing human fetus provides some of its own nutrition, digestive enzymes may need to be synthesised and secreted during interuterine life.

3.   And in yet another approach, researchers are seeking FDA approval to test fetal pig implants, hoping to duck congressional critics of using tissue from human fetuses.

4.   At about the same time, John Gearhart at Johns Hopkins University in Baltimore found the cells in human fetuses donated by women treated at a local abortion clinic.

5.   A police investigator told them the tissue may have been a human fetus, he said.

6.   But they are abundant mainly in human fetuses.

7.   Can a human fetus feel pain?

8.   Even the human fetus can hear sounds and has limited vision, Dr. Shatz said.

9.   He also helped develop a technique for operating on an important cardiovascular blood vessel in human fetuses, laying the groundwork for repairing certain congenital heart defects.

10.   He also pleaded guilty in state supreme court in Manhattan to illegally transporting two human fetuses in an unmarked box using United Parcel Service.