The main molecular alterations are represented by variations in gene expression, usually mild and with consequences for a vast number of target protein coding genes. (mdanderson.org)
By comparison, there was a good deal of variation in another gene, gag. (newscientist.com)
Researchers have identified a link between injury to the developing brain and common variation in genes associated with schizophrenia and the metabolism of fat. (sciencedaily.com)