In mice injected with the TRAMP-C2/Luc-eGFP cells, only co-injection of WT MSCs (T+WT) showed significant tumor growth, compared with those with CCL2 KO MSCs (T+#1 and T+#2) or no MSCs (Tumor only) (Supplementary Figure S4). The gene discussed is CCL2; the disease is neoplasm.