Retraction notice to “Chitosan coated pH/redox-responsive hyaluronic acid micelles for enhanced tumor targeted co-delivery of doxorubicin and siPD-L1” [Int. J. Biol. Macromol. 222 (2022) 1078–1091, (S0141813022021845), (10.1016/j.ijbiomac.2022.09.245)]

This article has been retracted: please see Elsevier policy on Article Correction, Retraction and Removal (https://www.elsevier.com/about/policies-and-standards/article-withdrawal). This article has been retracted at the request of the Editor. Concerns were raised regarding image duplication between Fig. 1 Panel G and Fig. 2 Panel E, within Fig. 7 Panel F, and within Fig. 8 Panel B. Additionally, image manipulation was detected in Fig. 2A. The authors were contacted for an explanation and requested to provide the raw data presented in the article but failed to offer a satisfactory response. These errors raised serious doubts about the reliability of the reported results and the validity of the research. Considering these issues, the Editor has decided to retract the article.