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. 2017 Jul 21;12:5189–5201. doi: 10.2147/IJN.S140345

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© 2017 Luo et al. This work is published and licensed by Dove Medical Press Limited

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Scheme 2 — Schematic illustration of PSHPMA-PDPA as a pH-responsive drug carrier that is activated in the cell for TP-PDT when the micelles are transformed into aggregates.

Abbreviations: PPa, pyropheophorbide a; PSHPMA-PDPA, poly (2-hydroxypropyl methacrylate)–co–poly(2-diisopropylamino) ethyl methacrylate; TP-PDT, two-photon photodynamic therapy.