03:13
HIV/AIDS: A Smart Enemy
Dr. Alexandra Levine, Chief of the Division of Hematology at the USC School of Medicine, explains that one of the things that makes the HIV virus so difficult is that it's a retro virus, which means it has the ability to take its genetic material an...
04:17
Stressed to the Limit: Stress and Susceptibility to Disease
Certain physiological reactions to stress can increase our vulnerability to infections diseases like colds or flu. A number of researchers did a series of studies to determine why. One factor seems to be that lymphocytes which serve an immune functi...