肾脏是人体主要的排泄器官，它的发育经过原肾、中肾、后肾3个阶段。
The development of the kidney, the major excretory organ after birth, consists of 3 stages:the pronephros, mesonephros and metanephros.
肾脏是人体主要的排泄器官，它的发育经过原肾、中肾、后肾3个阶段。
The development of the kidney, the major excretory organ after birth, consists of 3 stages:the pronephros, mesonephros and metanephros.
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