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. 2016 Dec 16;6:38403. doi: 10.1038/srep38403

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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TLR2 and TLR4 mRNA expression in the small intestine (A,B) and trachea (C,D) were measured at day 3 after the second immunization. IL-12, IL-10, and IFN-γ cytokines expression levels in the small intestine (E–G) and trachea (H–J) suspensions were measured at day 3 after the second immunization. Data shown are the means ± s.d. of six samples. *P < 0.05; **P < 0.01. The error bars represent standard deviations.