primordial follicle,preantral follicle
from top to bottom primordial
![预订 hair follicle: differentiation under. [9784431224297]](https://i.ssjz.top/upload/0/t15.baidu.com%2fit%2fu%3d1046675780%2c1050302564%26fm%3d224%26app%3d112%26f%3dJPEG%3fw%3d500%26h%3d500 "primordial follicle,preantral follicle")
预订 hair follicle: differentiation under. [9784431224297]
sirt1 facilitates primordial follicle recruitment
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neurotrophic factor promotes ovarian primordial follicle