1.   An infection picked up from an animal organ could circulate into the general population through xenotransplantation.

2.   But protests from advocates for animal rights and concerns that giving humans animal organs could unleash another AIDS virus have heightened the controversy over cross-species transplants.

3.   But scientists say that if the research succeeds an unlimited supply of animal organs could be developed.

4.   By early in this century, refinements in anesthesia and surgical technique paved the way for attempts at implanting animal organs into humans.

5.   He was among the first to promote gene therapy and to invest in the study of animal organs for human transplantation.

6.   Henney said FDA researchers are looking at whether animal organs might carry viruses that could infect humans.

7.   Ildstad said at the conference that for some illnesses, animal organs appear to provide the only hope.

8.   If we had an unlimited supply of animal organs, patients could receive transplants while still in reasonable health.

9.   In fact, they say, patients living with animal organs do so under guidelines designed to isolate potential viruses.

10.   It might also pave the way for widespread transplantation of animal organs into humans.