title: A critical review of the role of precipitins in hypersensitivity pneumonitis.
mesh_terms: D000542:Alveolitis, Extrinsic Allergic / Q000276:immunology*; D000818:Animals; D000830:Animals, Laboratory; D000907:Antibodies, Bacterial / Q000032:analysis; D000908:Antibodies, Fungal / Q000032:analysis; D003165:Complement System Proteins / Q000032:analysis; D006801:Humans; D007111:Immunity, Cellular; D008168:Lung / Q000276:immunology; D008262:Macrophage Activation; D011233:Precipitin Tests; D011234:Precipitins / Q000032:analysis*
chemical_list: D000907:Antibodies, Bacterial; D000908:Antibodies, Fungal; D011234:Precipitins; D003165:Complement System Proteins