1.

Are the anti A and anti B present in blood group O all time or are they produced only when antigen A or B enters the blood

Answer»

Both types are without A and B antigens, but the O Positive (left) has the Rh antigen. Type O Negative (right) has none of the antigens (A, B or Rh) on its MEMBRANE. AGGLUTINATION (CLUMPING) of type A red blood cells (RBCs) by anti-A antibodies.Explanation:



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