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A schematic representation of high-intensity focused ultrasound (HIFU)-responsive magnetic resonance imaging (MRI)-active MSNs. In this work, the particles were initially amine Figure 2. (green) and the pore channels capped with poly(ethylene glycol) (PEG) (brown). Finally, the effect of HIFU stimulation on the release of Gd(DTPA)2− can be observed. Reprinted with permission from reference [94]. Copyright (2019) American Chemical Society.
