title: Helical collagen fibrils in human lung associated with idiopathic spontaneous pneumothorax.
mesh_terms: D000328:Adult; D003094:Collagen; D003599:Cytoskeleton / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D011030:Pneumothorax / Q000209:etiology / Q000473:pathology*; D011650:Pulmonary Alveoli / Q000648:ultrastructure*
chemical_list: D003094:Collagen