title: An ultrastructural study of osteoarthritis changes in the articular cartilage of human knees.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002358:Cartilage, Articular / Q000473:pathology*; D002999:Clone Cells; D003094:Collagen / Q000032:analysis; D005260:Female; D006025:Glycosaminoglycans / Q000032:analysis; D006801:Humans; D007717:Knee / Q000473:pathology*; D007719:Knee Joint; D008247:Lysosomes; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D010003:Osteoarthritis / Q000473:pathology*; D012038:Regeneration
chemical_list: D006025:Glycosaminoglycans; D003094:Collagen