Figure 6. (A) Tube inhibits NO production in LPS-induced RAW264.7 cells. (B) Tube inhibits mRNA levels of iNOS, IL-1β, and IL-6 but not TNF-α. Values are expressed as mean ± SEM, and each experiment was repeated three times.****P < 0.0001, ***P < 0.001, **P < 0.01 and*P < 0.05 vs. LPS.