CD4 and melanoma: After combining the results of the survival analysis, Macrophages M1, T cells CD4 memory activated, and T cells follicular helper with high infiltration in the low-risk group were all related to a better prognosis (Figures 7F–H), while Macrophages M2, NK cells resting, and Mast cells resting with high infiltration in the high-risk group were related to worse prognosis in melanoma (Figures 7I–K).