A rare new blood type has been discovered, so "step aside A, B and O – there's a new player in town", said Gizmodo. So far, the "Gwada negative" blood type has been identified only in one person: a ...

Most people know their blood type—A, B, AB or O—along with whether they are Rh-positive or negative. But these familiar categories (those letters plus "positive" or "negative") represent just two of ...

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 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 ...

Although, of course, the fact that only a select few have it is impressive. It is distinguished by the fact that it does not contain antigens, meaning that it is neither negative nor positive. Such ...