- external yolk syncytial layer
-
portion of the yolk syncytial layer outside the blastoderm margin during epiboly
Dictionary of ichthyology. 2009.
Dictionary of ichthyology. 2009.
pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… … Universalium
Placenta — For the ancient Roman bread, see placenta (food). For the placenta of fruit, see placentation. Placenta Placenta Precursor … Wikipedia
human embryology — ▪ biology Introduction the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. The human body, like that of most animals, develops from a single cell produced by the union of… … Universalium
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
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Digenea — For the bird genus, see Anthipes. Digenea Helicometra sp. (Plagiorchiida: Opecoelidae) from the intestine of a Flame Cardinal fish Scientific classification … Wikipedia