Human Evolution
Published in Insights in Biomedicine • Jan 1, 2018
NobleIDNI6P02W13R54S43
Authors:
Cole LA
Abstract
Chorionic gonadotropin (CG) first evolved in Aotus and Callicebus, Anthropoid primates. This generated hemochorial placentation, which replaced epitheliochorial placentation. The first CG was close to neutral, pI=6.3, with a circulating ½-life of 2.4 hours. Hemochorial placentation was more efficien...
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