CXCL13 is also produced by human bone marrow endothelial (HBME) cells [88], Tfh that have infiltrated into tumor tissues [89], PD1+ CD8+ T cells [90], the TGFβ-dependent CD103+CD8+ tumor-infiltrating T-cell (TIL) subpopulation [91], neoplastic T cells [85], and several types of tumor cells. The gene discussed is CD8A; the disease is neoplasm.