title: Hypersensitivity pneumonitis due to exposure to Alternaria.
mesh_terms: D006801:Humans; D003904:Mitosporic Fungi / Q000276:immunology*; D011658:Pulmonary Fibrosis / Q000209:etiology* / Q000276:immunology; D012130:Respiratory Hypersensitivity / Q000209:etiology* / Q000276:immunology; D013172:Spores, Fungal / Q000302:isolation & purification