title: Diagnostic significance of serum precipitins in hypersensitivity pneumonitis.
mesh_terms: D000937:Antigen-Antibody Reactions; D006801:Humans; D011014:Pneumonia / Q000175:diagnosis; D011234:Precipitins / Q000032:analysis*; D012130:Respiratory Hypersensitivity / Q000175:diagnosis*
chemical_list: D011234:Precipitins