# Retraction: MicroRNA-21 promotes TGF-β1-induced epithelial-mesenchymal transition in gastric cancer through up-regulating PTEN expression

**Authors:** Chang Li, Lei Song, Zhuo Zhang, Xiao-Xue Bai, Ming-Fu Cui, Lian-Jun Ma

PMC · DOI: 10.18632/oncotarget.28789 · 2025-12-31

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Source: https://tomesphere.com/paper/PMC12776620