blood donation

ab aid antibodies antibody antigen antigens bank blood cell cells check checking classified classify danger dangerous dangers doctor donate donation donor donors draw drawn give giving group groups help helping hematology hemolysis hemolytic hepatitis hiv hospital immune immunity immunoglobulin life lives medical medics patient patients person personal persons plasma recipient red research rhesus safe safety save saving science sciences scientific serolohy serum supply surgery system table transfused transfusion transfusions type types unsafe voluntary volunteer volunteering volunteers