Rh-negative Rh-positive Rh-type Rhesus factor agglutinin allergen anaphylactin antiantibody antibody antigen antiserum antitoxic serum antitoxin antivenin arterial blood 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 bloodmobile bloodstream circulation clinical dextran dextran erythrocyte globulin gore grume hematics hematologist hematology hematoscope hematoscopy hemocyte hemoglobin hemometer humor ichor incomplete antibody interferon isoantibody leukocyte lifeblood neutrophil opsonin phagocyte plasma plasma substitute precipitin red corpuscle serum type O venous blood white corpuscle