1.   If the relevant gene could be incorporated into wheat, for example, it would reduce the number of herbicides required and extend the period of application.

2.   Bt corn incorporates a gene derived from the soil bacteria Bacillus thuringiensis that makes plants resistant to the damaging European corn borer pest.

3.   Cells that incorporated the gene began to function in a normal fashion, contracting more quickly and more powerfully.

4.   Most important, it is one of a small class of viruses, known as lentiviruses, that can incorporate genes into the chromosomes even of nondividing cells.

5.   So after it incorporates the gene into one cell, the viral particle cannot go on to direct the cell to produce more viruses.

6.   The experiments involved a vaccine made by incorporating weakened genes from HIV, the virus that causes AIDS.

7.   The two companies market corn that incorporates the gene.

8.   They hoped that the gene would be incorporated into the DNA of several stem cells, enough to make the blood factor permanently.

9.   Would any stem cells incorporate the gene?

10.   All of the drugs now on the market block one of two enzymes the virus uses to incorporate its genes into cells and use them to reproduce itself.