title: The potential aggressiveness of synovial tissue in rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000473:pathology*; D002358:Cartilage, Articular / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008854:Microscopy, Electron; D013583:Synovial Membrane / Q000473:pathology* / Q000648:ultrastructure; D013997:Time Factors