31.   Kelly said the five known genes provided reliable identification markers for assessing the validity and clinical significance of the new gene that his company and Sequenom found.

32.   Medical trials are under way in which humans are being injected with new genes to replace the miscoded genes causing disease.

33.   Migrations probably continued over time, he pointed out, bringing in new genes to mix with or replace the old.

34.   Meanwhile, the fluorescent tadpoles, now called transgenic because they will reproduce with their new genes, are giving a miniature light show.

35.   Most gene therapy experiments have used viruses to carry new genes into the body, a method that has sometimes caused inflammations and other immune reactions.

36.   New promising gene research, for instance, may lead to a cure.

37.   Now Lin has moved on to the next project, working to isolate new genes involved with the immune system and the formation of blood vessels.

38.   Next, he needed to insert this new chimeric gene into Aedes aegypti.

39.   Once they had the fetal cells they grew them in the laboratory and added new genes, at least one of which was human.

40.   Only when the cell is in the process of dividing does the nucleus become vulnerable to the insertion of a new gene.