All primary follicles matured at the age of 135 days in the foetal period and secondary follicles developed until 6 months after birth.
初级毛囊的发育在胎儿期135日龄时已完成，而次级毛囊发育直至出生后6月龄。
All primary follicles matured at the age of 135 days in the foetal period and secondary follicles developed until 6 months after birth.
初级毛囊的发育在胎儿期135日龄时已完成，而次级毛囊发育直至出生后6月龄。
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