For decades, most of us thought blood types were simple: A, B, AB, or O—each with a positive or negative Rh factor. But that’s just the surface. Scientists now recognize 48 distinct blood type groups, ...

The ABO-Rh system of blood group typing is an immensely successful method that helps medical professionals safely perform blood transfusions throughout the world. Scientists from the French Blood ...

The human body is always coming up with new ways to shock and surprise us, and it turns out that just 50 known people in the ...

To understand why this discovery matters, it helps to separate the idea of a rare blood type from a genuinely new blood group system. Most people are familiar with ABO and Rh, but there are dozens of ...

Blood transfusions are a cornerstone of modern medicine, saving lives during surgeries and emergencies. But for people with extremely rare blood types, finding a compatible donor can be a matter of ...

Close up photo of female scientist holding a laboratory pipette and a blood sample tube for covid-19 in laboratory. She is wearing a protective suit, laboratory glasses, surgical mask and surgical ...

A blood type is classified by the presence or absence of antibodies and certain antigens on the surface of the red blood cells (RBCs). There are four distinct blood types; A, B, AB and O. Transfusion ...