CCL2 and neoplasm: On the other hand, the parental TRAMP-C2 cell line is a selected clone from the TRAMP model [27], the anti-tumor effect observed in both WT and CCL2 KO MSCs was less likely to be due to immunogenic neo-antigens but rather to the elevated CD45+CD11b+Ly6G− mononuclear population (Figure 5d).