The authors have requested retraction due to the identification of errors in the data. Reference: Xiaoming Hu, Dongzhe Zhu. Rehmannia Radix Extract Relieves Bleomycin-Induced Pulmonary Fibrosis in Mice via Transforming Growth Factor ß1 (TGF-ß1). Med Sci Monit, 2020; 26: e927240. DOI: 10.12659/MSM.927240.