title: IgG4 and the immune system.
mesh_terms: D000707:Anaphylaxis / Q000276:immunology; D001327:Autoimmune Diseases / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D001514:Bee Venoms / Q000276:immunology; D004899:Erythroblastosis, Fetal; D005260:Female; D006636:Histamine Release; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000276:immunology; D007126:Immunoglobulin Allotypes / Q000235:genetics / Q000276:immunology; D007074:Immunoglobulin G / Q000145:classification / Q000235:genetics / Q000276:immunology*; D007153:Immunologic Deficiency Syndromes / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D011058:Pollen / Q000276:immunology; D011247:Pregnancy; D011487:Protein Conformation; D011971:Receptors, Immunologic / Q000276:immunology
chemical_list: D001514:Bee Venoms; D007126:Immunoglobulin Allotypes; D007074:Immunoglobulin G; D011971:Receptors, Immunologic