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...
Those with AB blood have both A and B antigens on red cells, but neither A nor B antibody in the plasma. If you have AB positive blood, you are universal plasma donor. People with type AB have been found to have a 23 percent increased risk of heart disease over those with type O blood. positive is the most common blood type; O negative is the universal donor type, meaning those with this blood type can donate red blood cells to anybody. For those with type O, itâs a mixed bag. If you have type O, you are more likely to get ulcers â and believe it or not, to rupture your Achilles tendons.