CD4 and neoplasm: Further, MCT11 was not expressed by other tumor-infiltrating immune cells, as tumor-infiltrating CD4+ T cells, B cells, natural killer cells, dendritic cells, polymorphonuclear-myleoid derived suppressor cells (PMN-MDSCs), monocytic-myeloid derived suppressor cells (M-MDSCs) and neutrophils (Extended Data Fig. 4).