<prompt> Which blood group is universal donor?ABOAB  <response>: ANSWER: C OREF: Ganong 24th ed page 562Persons with type AB blood are universal recipients because they have no circulating agglutinins and can be given blood of any type without developing a transfusion reaction due to ABO incompatibility. Type O individuals are universal donors because they lack A and B antigens, and type O blood can be given to anyone without producing a transfusion reaction due to ABO incompatibility. This does not mean, however, that blood should ever be transfused without being cross-matched except in the most extreme emergencies 