11.   It is legal to use fetal tissue for research as long as it is donated, not sold, by the women.

12.   Last week as expected, Bush said he would forbid funding for research using tissue from aborted fetuses.

13.   Meanwhile, the other two deaths, which occurred a week after routine knee surgery that did not use cadaver tissue, remain a mystery.

14.   Patient data are encoded so researchers cannot learn who donated a sample, and all donors must give a fully informed consent to have their tissues used.

15.   Processed pig tissue is already used by companies such as Medtronic Inc. and St. Jude Medical Inc. to make replacement valves for heart patients.

16.   Reier noted, however, that other nerve tissue may be used for the technique in the future.

17.   Scientific papers published at the time did not say what primate tissues were used to make the vaccine, Hooper said.

18.   So the wider implication in terms of public health is, in the process of using baboon tissue in humans, we introduce new infections into people.

19.   Surgeons sometimes use intestinal tissue to repair the bladder, but the results are not ideal.

20.   Supporters said using such tissue could create an unethical bond between abortion centers and medical research, and that the use partially condones abortion.