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. 2021 Jul 8;86(7):800–817. doi: 10.1134/S0006297921070026

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© The Author(s) 2021

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 https://creativecommons.org/licenses/by/4.0/.

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Fig. 1. — Structure of SARS‑CoV‑2 virion and its structural proteins. a) SARS‑CoV‑2 virion with its structural proteins (S, N, M, E) and genomic single stranded (+)RNA (+ssRNA): S, spike protein; E, envelope protein; M, membrane protein; N, nucleocapsid protein. b) SDS-PAGE of purified SARS‑CoV‑2 virions. Lanes: 1) molecular weight markers; 2) major structural proteins (S, its subunits S1 and S2 after proteolytic activation, and N). Adapted with permission from Yao et al. [9]. Copyright Elsevier, 2020.