Figure 1
From: The anti-cancer effect and mechanism of animal scale-derived extract on malignant melanoma cells

Cell viability assay. Effects of PSE on the proliferation of A375 and SK-MEL-103 melanoma cell lines were evaluated by CCK-8 assay. The viability of A375 cells was measured after treatment with gradient-diluted PSE for 24 h, 48 h, 72 h. The melanoma cell viability inhibitory effect of PSE showed a time- and concentration-dependent manner. Mean ± SEM shows the bar in graph. (*P < 0.05, **P < 0.01, ***P < 0.0005, ****P < 0.0001).