Warning: file_put_contents(): Only 0 of 5257 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 pronephroi是什么意思，pronephroi的翻译，pronephroi音标、读音、用法和例句_淳朴汉英词典
The pronephros does not function, but it marks at the fourth week of development the start of renal development. 前腎生腎節內，從頭側至尾耑先後出現橫行前腎小琯，內側耑開口於胚內躰腔，外側耑與頭尾走行的前腎琯相通。