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Definition of Chorioallantoic membrane
1. Noun. The very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois.
Medical Definition of Chorioallantoic membrane
1. Extraembryonic membrane formed in birds and reptiles by the apposition of the allantois to the inner face of the chorion. The chorioallantoic membrane is highly vascularised and is used experimentally as a site upon which to place pieces of tissue in order to test their invasive capacity. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Chorioallantoic Membrane
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