Humoral and cellular immunologic aspects of hypersensitivity pneumonitis.
D000542:Alveolitis, Extrinsic Allergic / Q000209:etiology / Q000276:immunology*; D000818:Animals; D000917:Antibody Formation; D001716:Bird Fancier's Lung / Q000276:immunology; D010856:Columbidae; D006801:Humans; D007111:Immunity, Cellular