Persons with 'AB' blood group are called as "Universal recipients". This is due to :
Absence of antigens A and B on the surface of RBCs
Absence of antigens A and B in plasma
Presence of antibodies, anti-A and anti-B, on RBCs
Absence of antibodies, anti-A and anti-B, in plasma
Option (4) is correct because persons with 'AB' blood group contain antigens 'A' and 'B' but lack antibodies anti-A and anti-B in plasma. So, persons with 'AB' blood group can accept blood from persons with AB as well as the other groups of blood due to lack of antibodies in their blood. Therefore, such persons are called "Universal recipients".
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