Scientists said Friday they had developed a revolutionary "spray-on skin" treatment for venous leg ulcers -- a common ailment involving a shallow, open and stubborn wound on the ankle or lower leg.
Small but significant breakthrough studies on people who have been able to overcome or control HIV were presented Thursday at a major world conference on ways to stem the three-decade-old disease.
Investigators are looking into two main paths toward a cure for AIDS, based on the stunning stories of a small group of people around the world who have been able to overcome the disease.