Hemin and ZnPP were used at the indicated concentration 2 h prior to LPS treatment. Each bar represents the mean ± SD of three to eight
repeated experiments. ⁄p < 0.05 compared to the no treatment. p < 0.05 compared to the LPS treatment. #p < 0.05 compared to the FRGE treatment. –p < 0.05 compared to the LPS + HRGE. p < 0.05 compared to the LPS + ZnPP + FRGE. §p < 0.05 compared to the LPS + FRGE. The plus and minus signs (+ and ) represent conditions with and without treatment, respectively.