Which blood type possesses both A and B antigens?

The blood type that possesses both A and B antigens is AB+. Individuals with this blood type have red blood cells that express both A and B antigens on their surface. This unique attribute allows them to receive blood from all other ABO blood groups, making them universal recipients. The presence of both antigens explains why AB individuals do not produce antibodies against A or B antigens, thus having a lower risk of transfusion reactions when receiving blood containing these antigens.

In contrast, blood types A and B express only one type of antigen (either A or B, respectively) and produce antibodies against the other type, thus limiting their compatibility with other blood types. Blood type O, on the other hand, lacks both A and B antigens, making it the universal donor for red blood cells but incompatible with A and B types when in need of transfusion.