11.   Another vaccine, under study at MGH and Dana-Farber, contains a gene for a natural immune-booster called GM-CSF as well.

12.   Avigen has injected seven hemophiliacs with a virus containing the gene that makes the protein B.

13.   Because of increasing concerns about genetically engineered plants and their pollen, which contains foreign genes, researchers say the new studies are particularly interesting.

14.   A plasmid is a secondary ring of DNA, containing genes that make anthrax toxic.

15.   About half the soybeans and one-third of the corn grown in the United States last year contained foreign genes making the crops resistant to herbicides or insects.

16.   Bt cotton contains a gene developed by St. Louis-based Monsanto Co. that enables plants to resist several major pests.

17.   Burge is the author of Genscan, one of the principal programs for predicting which regions of the genome contain genes.

18.   But even small, green tomatoes can contain some genes for redness and large fruit.

19.   Crucially, the adenovirus contains the genes for only a few of the foot and mouth viral proteins.

20.   Drug researchers throw a dash of each compound into a solution containing one gene and look for the fluorescent glow that indicates a reaction.