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. 2021 Apr 11;13(8):1825. doi: 10.3390/cancers13081825

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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) Schematic of the epidermal growth factor receptor I (EGFR)-targeted AuNPs and representative Photoacoustic imaging (PAI) cross-sectional images of AuNPs labelled A431 cells at different concentrations. Adapted with permission from [70], copyright 2019 Optical Society of America. (b) Time course reconstructed axial CT images after AuNPs injection and X-ray fluorescence computed tomography (XFCT) images at the levels of the kidneys and tumor (white arrow). Adapted with permission from [71], published by Springer Nature.