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. 2022 Aug 31;14(9):1938. doi: 10.3390/v14091938

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© 2022 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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Circular dichroism (CD) spectroscopy analysis charts of different inactivated virus samples. (A) Formaldehyde-inactivated virus samples. (B) Formaldehyde + BPL-inactivated virus samples. (C) BPL-inactivated virus samples. (D) BPL + BPL-inactivated virus samples.