Human blood already comes in a bewildering variety of types, but researchers have now identified a new one so rare that only ...

Scientists are working to grow the rarest blood type in the world in a lab, an effort that could have huge ramifications for medicine. The blood type in question, Rh null, is found in just 50 people ...

Although, of course, the fact that only a select few have it is impressive. It is distinguished by the fact that it does not contain antigens, meaning that it is neither negative nor positive. Such ...

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 ...

Human populations that left Africa evolved quickly whereas Neanderthals stayed the same, according to an analysis of blood group systems. When you purchase through links on our site, we may earn an ...