growing follicle (2 primary follicle: primordial follicle begin to grow oocyte LM: become large EM: rich in organelles follicular cell: become a layer of cuboidal or more layers r-zona pellucid /a layer of homogeneous structure- glycoprotein /eosinophilic in HE stain*growing follicle: ② primary follicle: primordial follicle begin to grow ---oocyte: LM: become large EM: rich in organelles ---follicular cell: become a layer of cuboidal or more layers ---zona pellucide: /a layer of homogeneous structure-glycoprotein /eosinophilic in HE stain