The Wilcoxon rank-sum outcomes, as depicted in the violin plot, revealed a significantly higher percentage of memory CD4+ T cells and mast cells in the bone metastatic melanoma group than in the normal group (p < 0.001) and a comparatively higher percentage of M0 macrophages in the tumor group (p < 0.001) (Figure 6C). This evidence concerns the gene CD4 and neoplasm.