单词proctodeum
n.: 【动】肛道网络: 肛凹;原肛;肛室
【动物;动物学】肛道
复数:proctodea
Strong expression is first observed in prechordal plate at the stage of 50% epiboly, l the stained cells then migrate to the proctodeum .
整胚原位杂交结果显示该基因最早主要在50%外包期的前脊索盘中表达,既而迁移到原肛处。