Flow cytometry analysis showed that a total number of CD45+ F4/80+ macrophages (Figure 2(b), p < 0.01), CD45+ CD11c+ CD11b+ inflammatory DCs (Figure 2(c), left panel, p < 0.05), and CD4+ helper T cells (Figure 2(d), p < 0.01) were significantly lower in the lungs of tumor-bearing mice that received MSCs. Here, CD4 is linked to neoplasm.