title: The role of infection in childhood asthma.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000956:Antigens, Viral / Q000032:analysis; D001249:Asthma / Q000276:immunology / Q000382:microbiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000276:immunology; D007070:Immunoglobulin A / Q000032:analysis; D007223:Infant; D008297:Male; D009175:Mycoplasma Infections / Q000382:microbiology; D012141:Respiratory Tract Infections / Q000150:complications* / Q000276:immunology / Q000382:microbiology; D014132:Trachea / Q000382:microbiology; D014777:Virus Diseases / Q000382:microbiology; D014779:Virus Replication
chemical_list: D000956:Antigens, Viral; D007070:Immunoglobulin A