詞語：proctodeum
proctodeum的意思
proctodeum 肛道;原肛;肛道 原肛;肛凹;
proctodeum的參考例句
1.Strong expression is first observed in prechordal plate at the stage of 50% epiboly, l the stained cells then migrate to the proctodeum. 整胚原位雜交結果顯示該基因最早主要在50%外包期的前脊索盤中表達，既而遷移到原肛處。
2.In the course of development, the invagination of stomodeum occurs earlier than that of proctodeum at the third and the sixth nauplius stages respectively. 在發育過程中，口凹是在第三期無節幼蟲時內陷形成，而原肛是在第六期無節幼蟲時內陷形成的，所以口凹的發生早於原肛的發生。