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. Author manuscript; available in PMC: 2021 Dec 13.
Published in final edited form as: Nano Lett. 2020 Jan 6;20(2):1378–1382. doi: 10.1021/acs.nanolett.9b04911

Figure 3.

Figure 3.

GSH-directed growth of NIR luminescent AuNPs in kidney tissues. (a) Whole-tissue NIR fluorescence imaging of the kidney before (Day 0) and after (Day 1) the formation of GS-AuNPs and zoom-in images of bright field (BF) and near-infrared (NIR) imaging of the kidney cortex after the in situ AuNP growth. (b) NIR luminescence spectra of the GS-AuNPs. (c) Confocal fluorescence microscopy (z-stack) image of kidney cortex with localized GS-AuNPs (full-scale width, 320 μm). (d) Microscopy imaging for the kidney slides (4 μm) with in situ formed ultrasmall GS-AuNPs. Scale bar, 10 μm. DT, distal tubule; PT, proximal tubule.