CD4 and melanoma: NKs, pDCs, cDCs, monocytes-derived DCs, monocytes, monocytic myeloid derived suppressors, macrophages, activated CD4+ T cells, exhausted CD4+ T cells, Tregs, CD8+ T cells, CD8+ TEM, CD8+ TCM, B cells, activated B cells, plasma cells, memory B cells, marginal zone B cells, follicular B cells, regulatory B cells, melanoma cells