The gene directs cells to make one protein molecule, which breaks into two smaller ones, called peptides.

The gene directs production of a key human blood substance, beta globin.

The gene directs the production of an enzyme that the researchers suspect helps chain lipids to each other.

The gene directs the body to produce an enzyme that reduces the activity of a brain chemical called serotonin, which strongly influences mood.

In some of these mice, the transplanted gene directed the production of the human substance in the animals' milk.

Those new genes took over and directed the eggs to grow and divide.

The gene directs cells to produce a human protein used to treat hemophilia.

The gene directs the body to produce a protein that can interfere with insulin's ability to open channels that let glucose enter cells.

In its healthy guise, the gene directs cells to create a protein that controls the body's flow of chloride molecules.

So far they know that the gene directs cells to make a protein that is apparently needed to prevent a sort of wild proliferation.