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. 2021 Aug 6;13(8):1214. doi: 10.3390/pharmaceutics13081214

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(A) Co-localization analysis of C6 rat glioma cells stained with MitoTracker green and TSPO-targeted QD@SiO₂ NPs. All pixels of the co-localization image shown in panel B are reported in the scatter diagram of panel A, in which the two image channels are compared. Region 1 of the diagram displays the co-localization pixels. (B) Representative confocal image of co-localization of TSPO-targeted QD@SiO2 NPs (red) and MitoTracker (green) in C6 cells. The co-localization is marked by the convergence of the red and green to yellow fluorescence; scale bar: 10 μm. (C) TSPO-targeted QD@SiO₂ NPs. Reproduced with permission [62]. Copyright 2017, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.