Figure 1. LPS stimulates tumor-cell adhesion in the liver by disrupting endothelial integrity. (A) Tumor cells in the livers of rats that had been treated with PBS or LPS and were sacrificed 1.5 h after tumor-cell inoculation. Red: DiI-labeled CC531s, blue: cell nuclei, arrowheads point to CC531s cells. (B) Quantification of tumor cells in the livers of rats after PBS or LPS treatment. n = 4 per group; *p < 0.05. (C) ZO-1 staining in the livers of rats that had been treated with PBS or LPS and were sacrificed after 1.5 h. Green: ZO-1; blue: nuclei.