Fig. 7
From: Strategies for using nanoprobes to perceive and treat cancer activity: a review
a Schematic illustration of the formation of DOX-loaded MSN@MnO2 and GSH-triggered drug release in cancer cells. b Fluorescence images of HepG2 cells incubated with DOX-loaded MSN@MnO2 for 3 h. c Viability of HepG2 cells after being treated by free DOX, MSN, MSN@MnO2, or DOX-loaded MSN@MnO2 for 48 h. NPs = nanoparticles. Reproduced with permission from ref. 53; Copyright 2015 Wiley-VCH