attempts to detect immune mediators in rheumatoid arthritis synovial fluids ( ra-sf ) by bioassays have yielded conflicting results , and so we analyzed the immune reactions occurring within rheumatoid joints using monospecific immunoassays for cytokines such as interleukin 1 beta ( il-1 beta ) , interleukin 2 ( il-2 ) and gamma interferon ( gamma-ifn ) .
C0003873
rheumatoid arthritis
C0022417
joints