<i>In vivo</i>, tumor-derived CXCL13 suppressed tumor growth, increased intratumoral CD8<sup>+</sup> T cell infiltration, and enriched CXCR5<sup>+</sup>TCF1<sup>+</sup>CD8<sup>+</sup> stem-like T cells. The gene discussed is CXCR5; the disease is neoplasm.