Figure 2  .

Effect of aminoguanidine (AG) on the release of interleukin 1β (IL1β) and nitric oxide (NO) in the media of lipopolysaccharide (LPS) stimulated cartilage cultures. Bars show the mean and SEM of six separate experiments. The absolute mean (SEM) levels of IL1β in control and LPS stimulated cultures were 0.29 (0.01) and 0.64 (0.12) pg/mg cartilage, respectively. The absolute mean (SEM) levels of NO in control and LPS stimulated cultures were 15.8 (0.001) and 30.68 (0.003) µmol/mg cartilage, respectively.