Sandra Oh and Ellen Pompeo in the ‘Grey’s Anatomy’ season 10 finale, ‘Fear (of the Unknown)’ From left: T.R. Knight, Katherine Heigl, Sandra Oh and Ellen Pompeo in the season 1 ‘Grey’s Anatomy’ ...
University of California, Irvine and Philadelphia-based Jefferson Health researchers have identified fundamental structural and functional differences between two major causes of mitral valve stenosis ...
Your heart is a muscular organ that helps circulate your blood, which delivers oxygen and nutrients to your tissues. There are four chambers and four valves in your heart, and each ensures proper ...