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 ...

“I’m going to keep doing it until they tell me to stop,” said Nigel Vaughan, who has donated his blood nearly 250 times ...

There’s more history in your blood types than you think, and it didn’t begin with humans. Here’s what we know about them, ...

Add Yahoo as a preferred source to see more of our stories on Google. blood vial screen An investigation into why blood doesn't always behave as doctors expect has revealed a super-rare mutation in an ...

Your blood type is more than just a label on your medical chart—it can affect your health, disease risk, and even emergency ...

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 ...

Two-year-old Zainab Mughal has neuroblastoma, an aggressive form of cancer. In December, we told you about the international search to find some of the rarest blood in the world to help save her life.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Two-year-old Zainab Mughal has some of the ...

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.

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 ...