title: Determination of homozygote vs heterozygote of blood group antigens with protein A.
mesh_terms: D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D007519:Isoantigens / Q000235:genetics*; D007626:Kell Blood-Group System / Q000276:immunology; D007667:Kidd Blood-Group System / Q000276:immunology; D012204:Rh-Hr Blood-Group System / Q000276:immunology*; D012397:Rosette Formation; D013205:Staphylococcal Protein A / Q000276:immunology*
chemical_list: D000939:Epitopes; D007519:Isoantigens; D007626:Kell Blood-Group System; D007667:Kidd Blood-Group System; D012204:Rh-Hr Blood-Group System; D013205:Staphylococcal Protein A