Sigal, Leonard H Basic science for the clinician 58: IgG subclasses. [electronic resource] - Journal of clinical rheumatology : practical reports on rheumatic & musculoskeletal diseases Sep 2012 - 316-8 p. digital Publication Type: Journal Article; Review ISSN: 1536-7355 Standard No.: 10.1097/RHU.0b013e318269446b doi Subjects--Topical Terms: HumansIgG Deficiency--classificationImmunoglobulin G--chemistryImmunoglobulin Isotypes--classification