PTPRC and neoplasm: To further understand the mechanism involved in MDSC-DCs vaccine immunization, we analyzed by flow cytometry the major subsets of TILs, which are highly relevant to the regulation of tumor growth,32in 4T1 tumor-bearing mice treated with different MDSC-DCs vaccines.Fig. 3AandSupplementary Fig. S4A(available in the online version only) showed that the percentage of CD45+TILs was slightly increased in mice vaccinated MDSC-DCs, compared with PBS group, but no significant difference among them.