Breast cancer study reveals 'substantial genetic diversity'
A new study of the protein-coding genes in 100 breast cancer tumors revealed vast differences among the cancers and highlights how complicated the disease really is, researchers said Wednesday.
Healthy food doesn't have to be expensive, USDA insists
U.S. asthma rates at all-time high, CDC says
Obesity in U.S. projected to grow, though pace slows: CDC study
Experimental drug helps the brain recover from stroke -- in mice