Which antibodies are present in type B blood?

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Multiple Choice

Which antibodies are present in type B blood?

In the ABO system, antibodies in plasma target the antigens you don’t have on your own red blood cells. People with type B blood have the B antigen on their red cells, so their immune system makes antibodies against the A antigen—anti-A antibodies—present in the plasma. That’s why the antibodies found in type B blood are anti-A antibodies. This explains why type B blood would react with type A or AB blood (which carry A antigens) but not with blood that lacks A antigens, like type B or type O.

In the ABO system, antibodies in plasma target the antigens you don’t have on your own red blood cells. People with type B blood have the B antigen on their red cells, so their immune system makes antibodies against the A antigen—anti-A antibodies—present in the plasma. That’s why the antibodies found in type B blood are anti-A antibodies. This explains why type B blood would react with type A or AB blood (which carry A antigens) but not with blood that lacks A antigens, like type B or type O.

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