* Rh-null blood lacks all 61 Rh antigens, making it extremely rare and medically valuable * It can save lives as a universal donor within rare blood types * Rh-null individuals //can only receive ...

A decades-long search to identify a mysterious blood antigen has led researchers to a hidden genetic difference found in a ...

Doctors stumbled upon a type rarer than “golden blood”—and suspect more patients carry the bizarre genetic anomaly.

Scientists identify a new blood type, "Gwada negative," adding the 48th blood group system to human biology. (CREDIT: CC BY-SA 4.0) A routine medical test turned extraordinary for a woman from the ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have discovered the rarest blood type on Earth, belonging to just one woman. Talk about a lonely hearts club. An ...

It started with a routine blood test before surgery. What doctors discovered next hadn’t been seen in medical history. Rachel MacPherson, C.P.T. For decades, most of us thought blood types were simple ...

A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.