31.   Gene therapy is aimed at delivering a working copy of this gene to the lungs, but scientists use nasal tissue for intitial experiments because it is more accessible.

32.   Katz said the discovery could also potentially obliviate the need for using fetal tissue, a practice opposed by many anti-abortion groups.

33.   Researchers believe they can manipulate embryonic stem cells to grow into different types of tissue, and use the tissue to treat various diseases and injuries.

34.   There is no danger from using tumor tissue in this manner, he said.

35.   Two victims said their rapist used tissues to clean himself up afterward.

36.   Under federal law, it is legal to use fetal tissue for research as long as it is donated, not sold, by the woman.

37.   Using the tissue, Ardais will create a nationwide library of samples to sell to genetic researchers.

38.   In addition, surgeons have already gained a decade of experience in using pig tissue, using heart valves in human cardiac surgery.

39.   It also reignited controversy over using animal tissue in humans and angered animal-rights activists.

40.   The panel said researchers should be allowed to use fetal tissues to study development of the embryo, in-vitro fertilization and other methods to improve successful pregnancies.