41.   Magnesium is found in chlorophyll, which helps plants turn sunshine into food, and sulfur is used to make several proteins.

42.   Most diseases occur when a pathogen or a gene defect causes a cell to make aberrant proteins.

43.   Most often viruses are harnessed for the task, because viruses are able to insert their genes into cells and force them to make foreign proteins.

44.   Much of the sequence has no known function but a small percent represent genes, which encode the instructions for making the proteins that carry out bodily functions.

45.   Once the genes get into the cells, they remain active for a few weeks, directing cells to make proteins.

46.   One way to do that would be to add genes to cells that force the cells to produce the drugs every time they made milk proteins.

47.   Or does it alter the blueprint so that a very different protein gets made?

48.   Proteins are made by genes.

49.   Proteins are made of building blocks known as amino acids that are arranged like beads on a string.

50.   Rodland hopes to find a unique protein made at the earliest stages of cancer, the presence of which could tip doctors off to the growth.