has received a multimillion-dollar grant to determine the genetic code of the rat, an important next step in the effort to unravel the basis of human disease. Because the laboratory rat is widely used ...

In recent experiments, rat brain cells filled in for lost neurons in mouse brains, raising new possibilities for growing donor tissues across species. When you purchase through links on our site, we ...

Proponents say it is necessary to test new trauma treatments. April 27, 2007 — -- New research involving the federal government is raising the medical and ethical question of when, if ever, ...