The age of appearance of the TAENIAE and haustra of the human colon and cause of formation
人类结肠袋、结肠带出现的年龄及其成因的探讨
The haustra of the human colon first appeared at the 56 mm . CR stage ( the end of 10 th week ) .
结肠袋出现在胚胎第10周末,坐高56mm的阶段。