title: Articular cartilage in rheumatoid arthritis: ultrastructure and enzymology.
mesh_terms: D000135:Acid Phosphatase / Q000032:analysis; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000201:enzymology* / Q000473:pathology / Q000601:surgery; D001857:Bone Matrix / Q000473:pathology; D002358:Cartilage, Articular / Q000201:enzymology* / Q000473:pathology / Q000648:ultrastructure; D002403:Cathepsins / Q000032:analysis; D005260:Female; D006596:Hexosaminidases / Q000032:analysis; D006801:Humans; D007958:Leukocyte Count; D008247:Lysosomes / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D000074402:Synovectomy; D013582:Synovial Fluid / Q000166:cytology / Q000201:enzymology; D013583:Synovial Membrane / Q000201:enzymology / Q000648:ultrastructure
chemical_list: D000135:Acid Phosphatase; D006596:Hexosaminidases; D002403:Cathepsins