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Effect of stromal cell-derived factor-1 (20 ng/mL) on E-cadherin expression (× 400). A: E-cadherin expression in HT29 cells; B: Significantly lower E-cadherin expression level 48 h after incubated with stromal cell-derived factor-1 (SDF-1) (P < 0.05); C: AMD3100- inhibited E-cadherin expression; D: No effect of AMD3100 alone on E-cadherin expression. Arrows mean the expression of E-cadherin; Bars indicate mean ± SD of six random fields. aP < 0.05.
