title: The synovium in rheumatoid arthritis: evidence for (at least) two pathologies.
authors.forename: John R
authors.initials: JR
authors.lastname: Kirwan
mesh_terms: D001172:Arthritis, Rheumatoid / Q000473:pathology*; D006801:Humans; D013583:Synovial Membrane / Q000473:pathology*