title: Letter: Farmer's lung: a neglected antigen.
mesh_terms: D000190:Actinomyces / Q000276:immunology*; D000942:Antigens, Bacterial / Q000302:isolation & purification; D003470:Culture Media; D005203:Farmer's Lung / Q000175:diagnosis / Q000276:immunology*; D006801:Humans; D011233:Precipitin Tests
chemical_list: D000942:Antigens, Bacterial; D003470:Culture Media