Fig. 2. Nitric oxide (NO) production after periplanetasin-5 treatment. Cells were pretreated with periplanetasin-5 for 1 h prior to incubation with lipopolysaccharides (LPS) for 24 h. Data shown are means ± SD of triplicate experiments. #p < 0.05 compared to the control (CTR) group. ***p < 0.001, **p < 0.01, *p < 0.05 compared to the LPS group.