Figure 3: Effects of Salvia keerlii on the levels of (a) tumor necrosis factor-α, (b) interleukin-1β, (c) interleukin-6, and (d) interleukin-10 in macrophages stimulated with lipopolysaccharide. The concentration was determined by enzyme-linked immunosorbent assay. The results are the mean of three determinations ± standard error of mean. *P < 0.05 versus vehicle