Evolution of the growth hormone, prolactin, prolactin 2 and somatolactin family

This document corresponds to the final published version of this article. You are free to download, print and distribute this document for any purposes under a Creative Commons Attribution 4.0 Unported License provided the original work is cited as specified.Cite this article as: Ocampo Daza D and Larhammar D. Evolution of the growth hormone, prolactin, prolactin 2 and somatolactin family, General and Comparative Endocrinology 264 (2018) 94-112. https://doi.org/10.1016/j.ygcen.2018.01.007.