Hypersensitivity reactions in relation to pulmonary fibrosis.
D001228:Aspergillosis / Q000276:immunology*; D005203:Farmer's Lung / Q000276:immunology*; D006801:Humans; D006967:Hypersensitivity / Q000503:physiopathology*; D011658:Pulmonary Fibrosis / Q000276:immunology*