Figure 3.
Serum cytokine changes following LPS injection. ELISA showed increased TNF-α, IL-1β, and IL-6 levels following one dose of LPS injection. However, repeated LPS injections abolished TNF-α, IL-1β, and IL-6 production. Data represent mean ± SEM; n = 6/group. ∗P < 0.05 vs. NS group. LPS: lipopolysaccharide; NS: normal saline.