ABO blood group system, the classification of human blood based on the inherited properties of red blood cells (erythrocytes) as determined by the presence or absence of the antigens A and B, which are carried on the surface of the red cells. Persons may thus have type A, type B, type O, or type AB blood. any of a type of specific antigen present on the surface of red blood cells, persons having inherited such antigens being designated Rh (Rh positive) and persons lacking them, a much smaller group, being designated Rh− (Rh negative) : blood of Rh− persons is incompatible with Rh blood because of antibody reaction, ... #Rh #Rh #RhFactor #ABOBloodType #aboBloodGroupSystem #BloodGroup #AlleleFrequency #GenotypeFrequency #ABOBloodTypes #ABOBloodGroups #RhBloodGroups #blood #classification #antibodies #transfusion #incompatibility #rhesus #bloodGroupsAndBloodTypes #bloodGroupsExplained #bloodGroupsAndTransfusions #bloodGroupsVideo #aboBloodTypesExplained #aboBloodGroup #bloodTransfusion #bloodTransfusionNursing
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