The ABO system also has a distinction as Rh-positive which decides A+, B+, O+ and AB+ blood type and Rh-negative, which leads ...

There are four main blood types: O, A, B, and AB, each classified as positive or negative based on the Rh factor. Blood type is usually determined during hospital visits, especially when a ...

The letters A, B and O represent various forms of the ABO gene, which program our blood cells differently to form the different blood groups. If you have type AB blood, for example, your body is ...

A person with an A blood type has the A antigen on the blood cells and the B antibody in the plasma. Whether you have a positive or negative blood type (like A+) depends on whether you have an ...