Blood Types

Blood Types


This lesson will identify and describe the four main blood types.

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  • Universal Donor

    The blood type O; type O blood contains no surface antigens so there is nothing for the immune system to reject.

  • Universal Recipient

    The blood type AB; type AB blood contains both A & B surface antigens which means that a person with this blood type won’t have any A or B antibodies in their blood.

  • Agglutination

    The high class term for clumping.

  • Antigen

    A unique marker on the surface of a cell that can stimulate an immune response.

  • Antibody

    Specific protein markers that are created by the immune system for binding and reacting to specific antigens.