BLASTODERM
\blˈastə͡ʊdəm], \blˈastəʊdəm], \b_l_ˈa_s_t_əʊ_d_ə_m]\
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By DataStellar Co., Ltd
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A single layer of cells produced by cleavage of the fertilized ovum and forming the outer cells of the blastula.
By DataStellar Co., Ltd
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The germinal, membranous cells of ovum.
By William R. Warner
By Willam Alexander Newman Dorland
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The germinal, or blastodermic membrane, or vesicle; a membranous bag formed in the fecundated ovum, consisting of segmentation spherules (blastomeres) pressed away from the center by the accumulation of blastochyle; the rudimentary structure from which the embryo is formed. At first it is a simple layer; after the formation of the primitive streak, it consists of two layers, the epiblast (ectoderm) externally and the hypoblast (entoderm) internally; after the formation of the medullary plates and the notochord, a third layer, the mesoblast (mesoderm), forms between the two. See epiblast, hypoblast, and mesoblast.
By Smith Ely Jelliffe
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.