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. 2022 Apr 15;9(4):190. doi: 10.3390/vetsci9040190

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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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Detection of post-infection antiviral activities of rPoIFN-β. Three cell lines MDBK cells (A), PK-15 cells (B) and Marc-145 cells (C) were infected with the indicated viruses VSV (A), PRV (B) or PRRSV (C) and then treated with a fixed concentration of rPoIFN-β. At different time points post infection, the post-infection antiviral activities were measured in triplicates by CPE inhibition assay. ** indicates significant difference (p < 0.01) in CPE protection of rPoIFN-β as compared with the virus control (VC).