The page below is a sample from the LabCE course Introduction to the ABO Blood Group System. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Match the blood types in the drop down boxes with the characteristics on the right.

Click each box to choose the correct answer.

Contains anti-B antibodies in the serum.
Has A and B antigens on the RBCs.
Has neither A nor B antigens.