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. 2022 Nov 3;13:6610. doi: 10.1038/s41467-022-34438-8

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — TEM images of (a–c) bare PSNPs, (d) protein corona-coated PSNPs that clearly reveal proteins on their surface after incubation with human plasma proteins, (e) and (f) Cryo-TEM images of protein corona-coated PSNPs obtained with a direct electron detector and phase plate, clearly showing the distribution of proteins on the surface of the PSNPs (black dots in the images (e, f) are 10 nm gold fiducial markers). The results are representative of three independent measurements.