In other words, the “positive” or “negative” next to blood type refers to the presence or absence of the Rh factor on your red blood cells. Rare Blood Types ...

Scientists from the French Blood Establishment (EFS) has successfully identified the ultra-rare 48 th blood type group, known ...

Did you know that your blood type can make you a lifesaver? Whether you're an O- universal donor or an AB+ universal ...

The rarest blood type is called Rhnull. ... For example, a person with AB blood and Rh factor has AB+ blood. Some people, including those with Rhnull blood, lack one or more common antigens.

Talk about a lonely hearts club. An unnamed woman from Guadeloupe has the rarest blood type on earth, to the extent that ...

The Rh factor is a type of protein that's usually found on red blood cells. When you have this protein, you’re considered Rh positive. About 85% of people are Rh-positive.

In addition to the Rh factor, people can also use the ABO system to determine blood type. However, the 30 known blood groups comprise more than 600 antigenic structures, meaning that some people ...

Rh-null is the rarest blood type and is considered to be "golden blood," according to Discovery. Rh-null blood is categorized by "a complete lack of antigens in the Rh system, which is the largest ...

Rh factor plays a role in blood transfusion and haemolytic disease of the newborn (erythroblastosis foetalis). Transfusion of Rh+ blood to a person with Rh- blood type can cause a transfusion ...

It is called RH incompatibility, and it can easily cause complications that will affect you and your baby. Your body will ...

Dear Dr. Donohue: A couple I know wants to get married. His blood type is Rh negative, and hers is Rh positive. Would they have any problems if they decide to have children? — Anon. Dear Anon… ...