title: Immunoregulation in hypersensitivity pneumonitis. I. Differences in T-cell and macrophage suppressor activity in symptomatic and asymptomatic pigeon breeders.
mesh_terms: D000542:Alveolitis, Extrinsic Allergic / Q000276:immunology*; D000818:Animals; D001402:B-Lymphocytes; D001716:Bird Fancier's Lung / Q000175:diagnosis / Q000276:immunology*; D010856:Columbidae; D005260:Female; D006801:Humans; D007111:Immunity, Cellular; D007958:Leukocyte Count; D008213:Lymphocyte Activation; D008264:Macrophages / Q000276:immunology*; D008297:Male; D008934:Mitogens / Q000494:pharmacology; D010586:Phagocytes; D013601:T-Lymphocytes / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D008934:Mitogens