title: Spontaneous reverse haemolytic plaque formation. I. Technical aspects of the protein A assay.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002712:Chlorides; D002857:Chromium; D017608:Chromium Compounds; D003165:Complement System Proteins / Q000276:immunology; D004306:Dose-Response Relationship, Immunologic; D004912:Erythrocytes / Q000276:immunology; D006462:Hemolytic Plaque Technique; D006801:Humans; D013205:Staphylococcal Protein A / Q000276:immunology*
chemical_list: D002712:Chlorides; D017608:Chromium Compounds; D013205:Staphylococcal Protein A; D002857:Chromium; D003165:Complement System Proteins; C017133:chromous chloride