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Effect of nitroprusside (Nitro) on interleukin 1β (IL1β) release in media of synovial tissue cultures. Bars show the mean and SEM of three separate experiments. The absolute mean (SEM) levels of IL1β in control and lipopolysaccharide (LPS) stimulated cultures were 7.46 (3.69) and 13.69 (4.5) pg/mg synovia, respectively.
