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Representative images of the TUNEL assay (green fluorescence of apoptotic cells and blue fluorescence of cell nuclei) on control WT tumor sections (A, B and C) and on TLR-4 KO tumor sections (D, E and F). The rate of cell apoptosis of each group was evaluated (G). Each data are expressed as mean ± SEM. T-test followed by unpaired test ***p < 0.001 vs Ctr WT.
