While all three CXCR3 ligands were elevated in niches with actively growing tumor populations, IP-10 (CXCL10; growing 2.2-fold, emergent 1.5-fold) was present at markedly higher absolute levels than that of MIG (CXCL9; growing 1.5-fold, emergent 1.4-fold) and I-TAC (CXCL11; emergent 1.4-fold). The gene discussed is CXCL10; the disease is neoplasm.