SELL and neoplasm: Although the differences were not clear in terms of memory cell subpopulations from the tumor (Figure 3G), it was clear that P2Et/P2Et mice in 4T1 had a higher, but not significant, frequency of CD4+ naïve (TN, CD45RB+, CD62L+) T cells but a lower frequency of CD4+ effector memory T cells (TEM, CD45RB−, CD62L−) than the PBS/P2Et group (Figure 3G).