Src/Stat3 signaling regulates the migratory ability of A431-III cells, which was reduced by the effectors. A wound-healing assay was conducted, and the cells were observed to migrate into the wound area. (A) A431-III cells were treated with dimethyl sulfoxide (DMSO), 10 and 20 μM of luteolin, 20 and 40 μM of quercetin, 1, 5 and 10 μM of Su6656, and 100, 200 and 400 μM of S3I-201. (B) The numbers of migrating cells treated with luteolin (a), quercetin (b), SU6656 (c) and S3I-201 (d) were measured from (A) and analyzed using ImageJ software (NIH, Bethesda, MA, USA). Statistical significance between groups were analyzed by a one-way ANOVA with Tukey’s test (* p < 0.05; ** p < 0.01; *** p < 0.001).