ABO Blood-Group SystemBlood Group AntigensRh-Hr Blood-Group SystemBlood Grouping and CrossmatchingMNSs Blood-Group SystemKell Blood-Group SystemBlood Group IncompatibilityLewis Blood-Group SystemP Blood-Group SystemGlycophorinDuffy Blood-Group SystemErythroblastosis, FetalIsoantibodiesErythrocytesAllelesPhenotypePlacenta DiseasesTrichophytinForssman AntigenErythrocyte Membranevon Willebrand FactorTissue Donors