title: Is the "hygiene hypothesis" being challenged?
authors.forename: Shih-Wen
authors.initials: SW
authors.lastname: Huang
mesh_terms: D001327:Autoimmune Diseases / Q000503:physiopathology*; D006801:Humans; D006920:Hygiene; D006967:Hypersensitivity / Q000503:physiopathology*; D008954:Models, Biological; D018418:Th2 Cells / Q000502:physiology*