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...
B Positive. One of every 12 people have B+ blood. B+ donors can give red blood cells to B+ and AB+, and can receive from any B or O blood type. Donors with B+ blood can make the biggest impact with red cell, whole blood and platelet donations.