title: Particulate structures in keratoconus.
mesh_terms: D003094:Collagen; D003238:Connective Tissue / Q000473:pathology / Q000648:ultrastructure; D003315:Cornea / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D007640:Keratoconus / Q000473:pathology*
chemical_list: D003094:Collagen