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. 2018 May 11;7(5):giy049. doi: 10.1093/gigascience/giy049

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© The Author(s) 2018. Published by Oxford University Press.

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 reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4: — Genes related to early sexual maturity and immune system function in quail and another avian species. A) Positions of amino acids under positive selection in the FSHβ protein. B) Location of two amino acids under positive selection on the predicted 3D structure of the FSHβ protein. C) Circulating FSHβ levels in blood during early development stages of quail and chicken for 6 weeks. D) Phylogenetic tree of Immunoglobulin-like and Immunoglobulin subtype proteins of quail, chicken, duck, turkey, and zebra finch.