The Warsaw Treaty Organization (also known as the Warsaw Pact) was a political and military alliance established on May 14, 1955 between the Soviet Union and several Eastern European countries.
1 Donors with blood type A... can donate to recipients with blood types A and AB. 2  Donors with blood type B... can donate to recipients with blood types B and AB.  Donors with blood type AB...
Your cells have type B antigens attached, so your body makes antibodies against only type A. Once the type A antigens are kept at bay, your blood cells show type B as the dominant type. You can receive type B or type O blood, and you can donate to those with type B or type AB blood.