A Big Break In Lou Gehrig S Disease
ALS strikes 5,000 Americans each year. The disease involves the progressive death of motor neurons, the nerve cells that transmit impulses from the brain and spinal cord to the muscles. As the condition advances, sufferers lose the ability to speak, swallow or breathe. Though a few survive 20 years or more (as the British astrophysicist Stephen Hawking has), most die within five years. By examining tissue from 18 ALS families, a team led by Dr....