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...
RED BLOOD CELLS. 1  Group O+ can donate red blood cells to any recipients except O-. 2  Group O-is the universal donor, but a person with O-blood type can only receive this type. 3  Group A+ can donate red blood cells to A+ and AB+ recipients.4  Group A-can donate red blood cells to A+ or A-and to AB+ or AB-recipients.ED BLOOD CELLS. 1  Group O+ can donate red blood cells to any recipients except O-. 2  Group O-is the universal donor, but a person with O-blood type can only receive this type. 3  Group A+ can donate red blood cells to A+ and AB+ recipients.