title: [The environment shapes the immune system. How dirt protects against allergies].
authors.forename: Martin
authors.initials: M
authors.lastname: Bischoff
mesh_terms: D000485:Allergens / Q000276:immunology*; D001249:Asthma / Q000453:epidemiology / Q000235:genetics / Q000276:immunology; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004731:Endotoxins / Q000276:immunology*; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D006920:Hygiene; D006967:Hypersensitivity / Q000453:epidemiology* / Q000235:genetics / Q000276:immunology*; D007108:Immune Tolerance / Q000276:immunology; D007112:Immunity, Maternally-Acquired / Q000276:immunology; D007223:Infant; D011247:Pregnancy; D012424:Rural Population; D012931:Social Environment
chemical_list: D000485:Allergens; D004731:Endotoxins