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...
1 While donors with Type AB blood can only give red cells to other Type AB recipients, they are the universal plasma donors. 2  The âright typeâ donation for AB donors may be an apheresis donation of plasma or plasma and platelets.onation of 'whole blood' is the most common type of blood donation, but there are a few other types of blood donation. Donation types include: 1  Blood (or Whole Blood). 2  Double Red Cells. 3  Platelets. 4  Plasma.