Fig. 2From: Nanomaterials alleviating redox stress in neurological diseases: mechanisms and applicationsCatalytic mechanisms of Fe3O4 NPs. a The reaction mechanism of dual enzyme-like activity of Fe3O4 NPs in different pH. Reprinted with permission from Ref. [37]. Copyright (2021) Wiley Online Library. b Dual enzyme-like activity of Fe3O4 NPs in cells. Reprinted with permission from Ref. [33]. Copyright (2012) American Chemical SocietyBack to article page