title: Antigen and methacholine challenge in children with asthma.
mesh_terms: D000941:Antigens / Q000008:administration & dosage*; D001249:Asthma / Q000175:diagnosis*; D001985:Bronchial Provocation Tests; D002648:Child; D006801:Humans; D008458:Measles Vaccine / Q000276:immunology; D008688:Methacholine Compounds / Q000276:immunology; D011058:Pollen; D013997:Time Factors
chemical_list: D000941:Antigens; D008458:Measles Vaccine; D008688:Methacholine Compounds