[Supportive therapy with blood components].

An overview about the recent state of the supportive therapy with blood components in the treatment of leukemia is given. The 1st part is devoted to the procurement of blood components and the techniques of preparation and storage are described. The 2nd part includes the side effects of blood components like alloimmunization, graft-versus-host disease and CMV-transmission and discusses the possibilities of prohibition. The 3rd part deals with the dosage of the single blood components and how to judge the efficacy of transfusion. In the last part the indications for the single blood donor components are described and therapeutical strategies are outlined.