title: The role of early infections, hygiene and intestinal microflora.
authors.affiliation: Asthma and Allergy Research Unit, Bambino Gesu Children's Hospital, Roma, Italy. matricardi@opbg.net
authors.forename: Paolo M
authors.initials: PM
authors.lastname: Matricardi
mesh_terms: D001249:Asthma / Q000276:immunology*; D006506:Hepatitis A / Q000276:immunology; D006801:Humans; D006920:Hygiene; D007413:Intestinal Mucosa / Q000276:immunology / Q000382:microbiology*; D018417:Th1 Cells / Q000276:immunology; D018418:Th2 Cells / Q000276:immunology