Blood Types

blood types ABO system Rh factor blood group A B AB O positive negative transfusion compatibility donation universal donor universal recipient hematology circulation plasma red blood cells white blood cells platelets immune system genetics inherited traits medical test blood analysis health screening typing compatibility antigen antibody blood disorder anemia clotting disease wellness laboratory medical examination healthcare patient therapy treatment blood health physiology cardiovascular system oxygen transport immune response hematologic study disease prevention medical research clinical test genetic marker blood sample blood compatibility transfusion safety blood science clinical care hematologic health blood function human biology life sciences