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 ...

An investigation into why blood doesn't always behave as doctors expect has revealed a super-rare mutation in an extremely uncommon variation of blood. Testing more than 544,000 blood samples in a ...

In a groundbreaking discovery, scientists have identified a new blood type that is so rare it exists in only one person on Earth. The blood type, called “Gwada negative,” was found by researchers at ...

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 ...

A routine medical test turned extraordinary for a woman from the Caribbean when doctors found something completely new in her blood. Nearly 15 years ago, while preparing for surgery in Paris, doctors ...

Human blood already comes in a bewildering variety of types, but researchers have now identified a new one so rare that only three people on the planet are known to carry it. The finding exposes just ...

In a routine blood test that turned extraordinary, French scientists have identified the world’s newest and rarest blood group. The sole known carrier is a woman from Guadeloupe whose blood is so ...

The donor must be of Pakistani, Indian or Iranian descent. The family of a 2-year-old girl battling an aggressive form of cancer is desperately searching for a rare blood type that will allow her to ...

Orlando, Fla. -- An international search is on to find some of the rarest blood in the world to help save the life of a 2-year-old South Florida girl. Zainab has neuroblastoma, an aggressive form of ...

Forty years ago, a young Swiss boy was brought to a Geneva hospital for treatment of a fairly routine childhood infection. When his blood was drawn and tested ...

It started with a routine blood test before surgery. What doctors discovered next hadn’t been seen in medical history. For decades, most of us thought blood types were simple: A, B, AB, or O—each with ...

An investigation into why blood doesn't always behave as doctors expect has revealed a super-rare mutation in an extremely uncommon variation of blood. Testing more than 544,000 blood samples in a ...