to elucidate a possible role for eosinophils in inflammatory joint reactions the concentrations of eosinophil cationic protein ( ecp ) -- a specific granule protein from eosinophils -- were measured by radioimmunoassay in 90 synovial fluids from patients with various inflammatory arthritides ( rheumatoid arthritis , reactive and crystal arthritides , reiter 's disease and psoriatic arthropathy ) .
C0022417
joint
C0003873
rheumatoid arthritis