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. 2015 Apr 14;11:94. doi: 10.1186/s12917-015-0409-6

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© Zhao et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Titers of IgG (A and C) and IgA (B and D) in the serum (A and B) and the saliva (C and D) of cows. Arrow indicates days of vaccinations. Values are means (n = 4), with error bars representing standard deviation. The asterisks (*) indicate significant (P < 0.05) difference between the control group and the vaccinated group at the same days.