chorioallantoic membrane

chorioallantoic membrane
(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

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