To elucidate the mechanisms by which TZ‐dSA3‐12 prevents tumor recurrence, we examined the populations of memory T cells in splenocytes, specifically effector memory T cells (Tem, CD3+CD8+CD44+CD62L−) and central memory T cells (Tcm, CD3+CD8+CD44+CD62L+). The gene discussed is SELL; the disease is neoplasm.