CCR7 and neoplasm: Of CD3+ T cells, the tumor had the highest proportion of CD8+ T cells (55.8% in tumor vs. 29.9% in MPE vs. 31.6% in blood), which were predominantly composed of CD45RA−CCR7− effector memory and CD45RA+CCR7− terminally differentiated (Temra) subsets (Figure 1C).