Breakthrough Discovery in Battle against Multiple Sclerosis

Multiple Sclerosis is a neurological disease that causes symptoms ranging from muscle weakness to paralysis. Its causes are environmental as well as genetic. Thirty years ago, researchers found one gene that's part of the problem. Now medical researchers say they've found a second gene.  Margaret Pericak-Vance, director of the Miami Institute for Human Genomics, co-authored two papers on MS published today.