At 48 h, the T/L (tumor to liver), T/K (tumor to kidney), and T/B (tumor to blood) ratios were significantly higher for the TLR5+ 4T1 tumor than for the TLR5− 4T1 tumor (1.70 ± 0.18 vs. 0.24 ± 0.02, 1.68 ± 0.28 vs. 0.24 ± 0.04, and 1.73 ± 0.12 vs. 0.25 ± 0.02, respectively; P < 0.01 for all). This evidence concerns the gene TLR5 and neoplasm.