- (1) Protective membrane around the eggs of insects and fishes.(2) Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the trophoblast, by the apposition of the allantois to the inner face of the chorion. The chorioallantoic membrane is highly vascularized, and is used experimentally as a site upon which to place pieces of tissue in order to test their invasive capacity.
Dictionary of molecular biology. 2004.
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Chorioallantoic membrane — The chorioallantoic membrane of a developing chick covered with Smallpox virus pocks MeSH … Wikipedia
chorioallantoic membrane — noun the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois • Syn: ↑chorioallantois • Hypernyms: ↑membrane, ↑tissue layer * * * noun see chorioallantois … Useful english dictionary
chorioallantoic membrane — The membrane in hens eggs that helps chicken embryos get enough oxygen and calcium for development. The calcium comes from the egg shell … English dictionary of cancer terms
chorioallantoic membrane — noun see chorioallantois … New Collegiate Dictionary
chorioallantoic membrane — chorioallantois … Medical dictionary
chorioallantoic graft — the placing of cells, tissues, or parts on the chorioallantoic membrane of the embryonic chick … Medical dictionary
membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m … Medical dictionary
chorioallantois — chorioallantoic / al euhn toh ik/, adj. /kawr ee oh euh lan toh is, toys, kohr /, n. Embryol., Zool. a vascular, extraembryonic membrane of birds, reptiles, and certain mammals, formed by the fusion of the wall of the chorion with the wall of the … Universalium
CAMVA — chorioallantoic membrane vascular assay … Medical dictionary
CAMVA — • chorioallantoic membrane vascular assay … Dictionary of medical acronyms & abbreviations