title: Hygiene and the immune system.
authors.affiliation: Unilever Safety and Environmental Assurance Centre, Bedford, UK.
authors.forename: R W
authors.initials: RW
authors.lastname: Crevel
mesh_terms: D000818:Animals; D001249:Asthma / Q000276:immunology; D001327:Autoimmune Diseases / Q000276:immunology*; D016207:Cytokines / Q000276:immunology; D004485:Eczema / Q000276:immunology; D006801:Humans; D006920:Hygiene / Q000592:standards; D007121:Immunocompetence; D008019:Life Style; D006255:Rhinitis, Allergic, Seasonal / Q000276:immunology; D012307:Risk Factors
chemical_list: D016207:Cytokines