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. 2015 Feb 10;15:19. doi: 10.1186/s12903-015-0003-0

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© Wattanarat 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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Significant but transient increase in salivary human neutrophil peptide (HNP) 1–3 levels by probiotic supplementation. The y-axis of box plot graph demonstrates salivary HNP1-3 levels normalized by total protein concentration in the unit of μg/mg for the control (empty boxes) and the probiotic (gray boxes) groups from four different periods of saliva collection: T0, T3, T6 and T12. * = p < 0.05; *** = p < 0.001. The solid lines show the significant differences between two groups, while the dotted lines represent the significant differences within the probiotic group.