title: Pterygium and pinguecula: electron microscopic study.
mesh_terms: D002114:Calcinosis / Q000473:pathology; D003094:Collagen / Q000648:ultrastructure; D003229:Conjunctival Diseases / Q000473:pathology*; D003238:Connective Tissue / Q000648:ultrastructure; D004547:Elastic Tissue / Q000648:ultrastructure; D004804:Eosinophils / Q000648:ultrastructure; D006801:Humans; D006818:Hyalin / Q000378:metabolism; D011625:Pterygium / Q000473:pathology*
chemical_list: D003094:Collagen