CD4 and neoplasm: Moderate-dose exercise did not alter the effects of PTX on the proportion of CD4+ T lymphocytes (Fig. 6A), CD8+ T lymphocytes (Fig. 6B), myeloid-derived suppressor cells (MDSCs, Fig. 6C), CD11b+/F4/80+ macrophages (Fig. 6D) among leukocytes within the tumor tissue.