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. 2017 May 22;8:568. doi: 10.3389/fimmu.2017.00568

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Copyright © 2017 Peralta, Magnoli, Alustiza, Nilson, Miazzo and Vivas.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Immunoglobulin A (IgA) concentration levels. IgA concentration levels in laying hens from 23 to 42 weeks in the F₄ (F₄) and Control (C) groups. ***P < 0.001. Arrows indicate immunizations.