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
，它的发育经过
肾、中肾、后肾3个
。
始的泌尿
)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，它的发育经过肾、中肾、后肾3个。
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