Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/7084e1ed1185787207ba4f8f7754df82.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 pronephroi例句_pronephroi英汉例句_pronephroi双解例句_甲百汇小鸡词典
The pronephros does not function, but it marks at the fourth week of development the start of renal development. 前肾生肾节内，从头侧至尾端先后出现横行前肾小管，内侧端开口于胚内体腔，外侧端与头尾走行的前肾管相通。