title: [Life in a clean environment: risky if we have to believe the 'hygiene hypothesis'].
authors.affiliation: Hoofdafdeling Immunologie en lnfectieziekten, Faculteit der Diergeneeskunde, Universiteit Utrecht, Postbus 80165, 3508 TD, Utrecht. w.eden@vet.uu.nl
authors.forename: Willem
authors.initials: W
authors.lastname: van Eden
mesh_terms: D000818:Animals; D015551:Autoimmunity; D004781:Environmental Exposure; D004783:Environmental Microbiology; D015438:Health Behavior; D006801:Humans; D006920:Hygiene; D006967:Hypersensitivity / Q000276:immunology* / Q000517:prevention & control; D007109:Immunity / Q000502:physiology*