Fig. 1. Cell viability of Raw264.7 cells after periplanetasin-5 treatment. Cells were treated with different concentrations (0, 10, 20, 30, 40, 50, and 60 μg/ml) of periplanetasin-5 for 24 h, and cell viability was measured by the [3-(4,5- dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt; MTS].