Retraction Note: Knockdown of FOXO3a induces epithelialmesenchymal transition and promotes metastasis of pancreatic ductal adenocarcinoma by activation of the βcatenin/TCF4 pathway through SPRY2

撤稿声明：敲低FOXO3a可通过SPRY2激活β-catenin/TCF4通路，诱导上皮间质转化并促进胰腺导管腺癌转移。