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. 2021 Feb 11;9(2):146. doi: 10.3390/vaccines9020146

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© 2021 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 (http://creativecommons.org/licenses/by/4.0/).

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The formation of infectious bronchitis virus (IBV) VLPs identified by TEM. (A) Purified SME-VLPs. (B) Purified SM-VLPs. (C) Purified ME-VLPs. Bar = 100 nm.