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. 2022 Aug 17;13:4831. doi: 10.1038/s41467-022-32547-y

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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. 7 — K18-hACE2 mice were immunized with SpiN adjuvanted with Poly ICLC (a, b) or Covishield (e, f) and treated with anti-CD4⁺, anti-CD8⁺ or both on days −3, −2, and −1 before infectious challenge. Naïve K18-hACE2 mice were administered, at day −1 before infection, with pooled sera from control or SpiN- (c, d) or Covishield- (g, h) immunized mice. Body weight (a, c, e, g) and survival (b, d, f, h) were monitored for 11 days after infection with the SARS-CoV-2 Wuhan strain. a–h 4 mice/group.