41.   The StarLink corn is engineered to insert a gene that produces a protein lethal to the corn borer, a common pest.

42.   The vector is the disabled virus used by gene therapists to insert corrective genes into human cells.

43.   There has been talk, for instance, of inserting flounder genes in tomatoes to keep them from freezing.

44.   The work required inserting three genes from different sources into the rice plant, in effect introducing the entire pathway by which beta-carotene is produced.

45.   They do not have a missing gene, he said, but it might be possible to insert synthetic genes into their stem cells.

46.   They have inserted the genes that code for the foot and mouth viral coat into live human adenoviruses.

47.   Vectors are typically made by inserting genes into deactivated viruses that target certain cells, literally infecting them with healthy DNA.

48.   Yet because of the way genes are inserted into unrelated organisms, they have the potential to disrupt other areas of essential genetic information.

49.   Working with Ariad Pharmaceuticals of Cambridge, Mass., Wilson has inserted genes for a two-part promoter into adeno-associated virus.

50.   A soybean that proved allergenic after scientists inserted a gene from the Brazil nut was withdrawn before it reached the market.