Rh factor Rh-negative Rh-positive Rh-type Rhesus factor antibody antigen arterial blood arterial transfusion blood blood bank blood cell blood count blood donor blood donor center blood group blood grouping blood picture blood platelet blood pressure blood serum blood substitute blood transfusion bloodstream circulation clinical dextran dextran direct transfusion drip transfusion erythrocyte exchange transfusion exsanguination transfusion exsanguino transfusion globulin gore grume hematics hematologist hematology hematoscope hematoscopy hemocyte hemoglobin hemometer humor ichor isoantibody leukocyte lifeblood neutrophil opsonin perfusion phagocyte plasma plasma substitute plasma transfusion reciprocal transfusion red corpuscle replacement transfusion serum serum transfusion transfusion type O venous blood venous transfusion white corpuscle