title: The initial recognition of IgG subclasses.
mesh_terms: D000911:Antibodies, Monoclonal; D006801:Humans; D007126:Immunoglobulin Allotypes; D007141:Immunoglobulin Fc Fragments / Q000032:analysis; D007074:Immunoglobulin G / Q000145:classification*; D007132:Immunoglobulin Isotypes; D010446:Peptide Fragments / Q000032:analysis
chemical_list: D000911:Antibodies, Monoclonal; D007126:Immunoglobulin Allotypes; D007141:Immunoglobulin Fc Fragments; D007074:Immunoglobulin G; D007132:Immunoglobulin Isotypes; D010446:Peptide Fragments