abo blood group system anticoagulant apheresis blood blood donation blood plasma blood product blood substitutes blood transfusion blood type colton antigen system cross-matching cryoprecipitate diego antigen system duffy antigen system exchange transfusion ffp fresh frozen plasma hh antigen system human blood group systems ii antigen system kell antigen system kidd antigen system leukapheresis lewis antigen system lutheran antigen system mns antigen system other red cell antigens p antigen system plasmapheresis platelet plateletpheresis red blood cell rhesus blood group system transfusion transfusion medicine transfusion reaction xg antigen system yt antigen system