Fig. 6

Effect of propolis on plasma cytokine levels. Interleukin-6 (A), transforming growth factor-β (B), and C-reactive protein (C) levels are shown as boxplots (n = 8). Boxplots show minimum, first-quartile, median, third-quartile, and maximum values. Outliers are shown as circles. P-values were determined using one-way analysis of variance (post-hoc test Tukey’s test), * P < 0.05, ** P < 0.01