If you don't know your blood type, you're not alone. However it is important medical information to know, and here's how you ...

Specifically, this type of blood lacks any of the 61 Rh antigens. Its distinctive factor is indeterminable, thereby earning ...

Your blood type might seem like a minor detail in your medical history, but it carries significant implications for your ...

Rh-null blood was discovered in 1960. It is a blood type that lacks Rh antigens, a protein that is usually found in blood. People with this rare blood type often suffer from anemia. The golden blood ...

It's a bit simplistic, but you can think of the Rh factor as a protein that is either present (positive) or absent (negative) on red blood cells. Exact percentages vary with race, but most people ...