apical ectodermal ridge
(embryology) A formation of ectodermal cells that occurs at the distal end of each limb bud and functions as the primary signaling point to secure the proper development of a limb.
plural of saddle vein
Alternative form of Ji'an
In a cursed manner; miserably
四肢形成の過程で、肢芽の末端に形成される頂端外胚葉稜は、四肢の伸長と形態形成を指示するシグナル分子を分泌します。
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