Blood is said to be "positive" or "negative" based on whether there are proteins on the red blood cells. If your blood has proteins, you're Rhesus, or Rh, positive.

Red blood cells are complex — there's much more to blood types than A, B and O. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Many ...

Scientists have uncovered a new biological mechanism behind tissue and organ damage in low-oxygen conditions like heart attacks, strokes, and severe COVID-19. Bursting red blood cells—not ...

Is red wine good for your heart? A cardiovascular surgeon in Savannah, Georgia, has some definite thoughts about the matter. "In a nutshell, red wine is not good for your heart," Dr. Jeremy London ...