The mast cell and synovial inflammation. Or, what's a nice cell like you doing in a joint like this?
D002463:Cell Membrane Permeability; D002633:Chemotaxis; D006706:Homeostasis; D006801:Humans; D008407:Mast Cells / Q000276:immunology / Q000473:pathology* / Q000503:physiopathology; D013583:Synovial Membrane / Q000502:physiology; D013585:Synovitis / Q000276:immunology / Q000473:pathology*