RETRACTED: Surface PEGylation of ZIF-8 metal-organic framework based on magnetic hydroxyapatite as a pH/magnetic targeting responsive system for anticancer drug delivery

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief due to image and data integrity concerns. Notably the inset photograph in Figure 7a was found to come from Yulia et al., An Assay of Antioxidant Activity of Methanolic Extract of Various Types of Soybean, Jurnal Sains Farmasi & Klinis, 1(2), 122–131, and on requesting the original photograph another manipulated image was provided. Additionally, the top two curves in Fig. 5 do not correspond to the raw data provided by the authors. Our apologies are offered to readers that these issues were not detected during peer review.