Add Yahoo as a preferred source to see more of our stories on Google. A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune ...

Most people know their blood type, treat it as a fixed personal fact like ...

Scientists discovered a new group of blood types called the Er system. They also say that there are many ways to classify blood, the knowledge of which assists in treating blood incompatibility issues ...

You are probably aware of the two main blood group systems: the AB system and the rhesus system. Under the AB system, there are four main blood types A, B, AB and O. And each of these four types can ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. There’s more history in your blood types than you think, ...

See more of our coverage in your search results. Add The New York Post on Google Most people don’t spare a thought for their blood type unless they’re in need of a transfusion — but could yours hold ...

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 ...

Your blood type isn’t just important for transfusions — it’s actually providing you with built-in protection against certain diseases while potentially making you more vulnerable to others. The same ...

In 2011, a woman from the French overseas region of Guadeloupe underwent routine tests before a surgery. Strikingly, doctors could not identify her blood group, which was so unique that they did not ...

In an emergency, knowing your blood type could save your life. While this may sound dramatic, it’s true, especially if you have a rare blood type such as AB-negative. If you’ve never given blood or ...

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.