although we demonstrate that sf contains potent inhibitors of endogenous and exogenous il-1 we were able to estimate that samples from rheumatoid arthritis , osteoarthritis and other arthritides contain the equivalent of tens or hundreds of picograms of il-1 per millilitre , when compared to a standard il-1 preparation .
C0003873
rheumatoid arthritis
C0003864
arthritides