IMMUNOLOGY

Detailed explanation-1: -B positive patients can receive blood from B positive, B negative, O positive and O negative donors.

Detailed explanation-2: -Type O positive blood is critical in trauma care. Those with O positive blood can only receive transfusions from O positive or O negative blood types.

Detailed explanation-3: -Type O blood does not cause an immune response when it is given to people with type A, type B, or type AB blood. This is why type O blood cells can be given to people of any blood type. People with type O blood are called universal donors. But people with type O can only receive type O blood.

Detailed explanation-4: -For example, if someone with Type O blood (blood with no A or B antigens on the surface of red blood cells) received red blood cells donated from someone with Type B blood (blood containing B antigens), the recipient’s immune system would immediately identify the new blood cells as foreign and seek to destroy them.