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A) Scheme of MNs for cellular uptake by hierarchical ultrasound‐responsive positively charged MSN nanoplatforms. Reproduced with permission.[ 120 ] Copyright 2018, Royal Society of Chemistry. B) Illustration of the fabrication and C) SDT sensitization of the nanosystem for hypoxic osteosarcoma. Reproduced with permission.[ 121 ] Copyright 2019, WILEY‐VCH GmbH.
