MICROANATOMY

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

Detailed explanation-2: -Group B can donate red blood cells to B’s and AB’s. AB’s. Group O can donate red blood cells to anybody. It’s the universal donor.

Detailed explanation-3: -Group B patients have B antigen on their red cells, so they can’t receive group O or group A plasma as the anti-B will attack their red cells. Group AB recipients can only receive group AB plasma. Group O recipients don’t have either A or B antigen, so can safely receive plasma of any blood group type.

Detailed explanation-4: -An AB parent can indeed sometimes have an O child. But it is by no means common. In fact it would be fair to say that it is exceedingly rare. Usually, an AB parent and an A parent can only have children who are Type A or Type B.

Detailed explanation-5: -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.