[Changes in binding of Fc portion caused by chemical modification of protein A].
D000937:Antigen-Antibody Reactions; D001426:Bacterial Proteins / Q000276:immunology*; D002473:Cell Wall / Q000276:immunology*; D007141:Immunoglobulin Fc Fragments; D013291:Streptococcus / Q000648:ultrastructure*
D001426:Bacterial Proteins; D007141:Immunoglobulin Fc Fragments