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Magnetically-responsive delivery of ChitoPEG/DOX/IO nanocomposites against DOX-resistant CT26 mouse colorectal carcinoma cells in vitro. (a) Cell images of magnetic responsiveness of nanocomposites. (b) Viability of CT26 cells. To study magnetic-responsiveness, nanocomposites treated to cells for 1h and then cells were washed to observe.
