Similarly, T cells require the support of conventional type 1 dendritic cells 1 (cDC1) in the tumour microenvironment (TME), a highly specialized antigen presenting cell (APC) subtype capable of presenting tumour antigens and producing the necessary chemokines for enhanced T cell migration (ie, CXCL9/CXCL10).24–26. The gene discussed is CXCL9; the disease is neoplasm.