title: Absence of anti-acetylcholine receptor antibodies in congenital myasthenia gravis.
mesh_terms: D000293:Adolescent; D000328:Adult; D001323:Autoantibodies / Q000302:isolation & purification*; D001327:Autoimmune Diseases / Q000276:immunology; D002648:Child; D006801:Humans; D008297:Male; D009157:Myasthenia Gravis / Q000151:congenital* / Q000209:etiology / Q000235:genetics; D011950:Receptors, Cholinergic / Q000276:immunology*
chemical_list: D001323:Autoantibodies; D011950:Receptors, Cholinergic