title: Electron microscopic studies of corneal stroma: aging changes of collagen fibers.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000368:Aged; D000375:Aging; D003094:Collagen / Q000032:analysis*; D003315:Cornea / Q000166:cytology* / Q000254:growth & development / Q000473:pathology; D006801:Humans; D008854:Microscopy, Electron; D008867:Microtomy; D008875:Middle Aged; D011180:Postmortem Changes
chemical_list: D003094:Collagen