Red blood cells transport oxygen throughout your body, including to vital organs and tissues. They also help your body get rid of carbon dioxide. Too little or too many red blood cells may be ...

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 people know ...

Platelets are small types of blood cells that prevent excessive bleeding. It’s possible to develop low or high platelet counts related to a number of health conditions. Platelets are one of the main ...

Hematopoietic stem cells give rise to all blood cells in the body. Most of the time they are not dividing. Rather, they serve as a reserve for the times when the body needs rapid blood formation. “One ...