Retraction Statement. Paper by Li J, Yu J, Zhang H, Wang B, GuoH, Bai J, Wang J, Dong Y, Zhao Y., Wang Y., entitled ‘Exosomes-Derived MiR-302b Suppresses Lung Cancer Cell Proliferation and Migration via TGFβRII Inhibition‘ Cell Physiol Biochem 2016;38(5):1715-1726. doi:10.1159/000443111