The four major blood groups are group A, group B, group AB and group O. Group A has the A antigen in the red cells and A antibody in plasma, and B only has B antigens and B anti-bodies in the plasma. Group AB has both A ... More »

The four different groups of blood are classified as group A, group B, group AB and group O, according to the American Red Cross. Each group contains two blood types, a plus type and a minus type. For example, blood grou... More »

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The most common blood group is O, while the most uncommon blood group is AB. The most common blood type is O positive, while the most uncommon blood type is AB negative. More »

The four different groups of blood are classified as group A, group B, group AB and group O, according to the American Red Cross. Each group contains two blood types, a plus type and a minus type. For example, blood grou... More »

www.reference.com Health Diagnostics & Imaging

Blood of the AB type has both A antigens and B antigens carried on red blood cells but lacks both A and B antibodies in its plasma. These characteristics make the AB blood type the most restricted with regard to red cell... More »

B cells are white blood cells that differentiate into plasma B cells and produce antibodies specified for certain antigens. These cells can produce many antibodies in order to eradicate the foreign antigens from the huma... More »

The four major blood types present in the human population include group A, group B, group AB and group O, according to the Red Cross. These blood type groups are based on blood antigens and antibodies. More »

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