Fig. 2: The expression level of POU4F1 was associated with Ki-67 level and the progression of melanoma.

a Representative immunohistochemistry staining images of Ki-67 and POU4F1 expressions in nevus and melanoma tissues, bar = 200 μm. b Quantitative analysis of Ki-67 staining score. c Quantitative analysis of POU4F1 staining score. (nevus n = 6, primary melanoma n = 10, metastatic melanoma n = 10) Data are mean ± SEM, **p < 0.01, ***p < 0.001.