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. 2020 Jan 1;10(3):1296–1318. doi: 10.7150/thno.41578

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(A) Schematic illustration of the structure of M-SAO@SiO₂ and the working mechanism of SAO-based X-PDT. (B) The XEOL of SAO (red) and the absorption of MC540 (black). (C) Viabilities of U87MG cells with different treatments. (D) Tumor growth curves of mice intratumorally injected with M-SAO@SiO₂, SAO@SiO₂, and PBS, followed by X-ray irradiation. M-SAO@SiO₂: Nanosensitizers consisted of a core made of SrAl₂O₄:Eu (SAO) and a silica coating loaded with merocyanine 540 (MC540), SAO@SiO₂: Silica-coated SrAl₂O₄:Eu. Adapted with permission from Ref 8. Copyright 2015 American Chemical Society.