RNA INTERFERENCE:
Mini RNA Molecules Shield Mouse Liver From Hepatitis
Jennifer Couzin
Shooting millions of tiny RNA molecules into a mouse's bloodstream can protect its liver from the ravages of hepatitis, a new study shows. It offers further hope that a novel approach to silencing troublesome genes will become a valuable disease-fighting tool. But the authors and others caution that the therapy must leap many hurdles before it can be safely applied to humans.