1.3卵巢的发生 1)XX( no sry)→初级性索→髓质→消失 2)体腔上皮→次级性索(含原始生殖细胞) Surface Degenerating epithelium mesonephric tubule Degenerating medullary cords Oogonium Cortical Follicular ; cords cells Ductuli efferentes Paramesonephric Surface du Mesonephric Paramesonephric duct duct epithelium B Mesonephric duct1.3 卵巢的发生 1) XX (no SRY) → 初级性索 → 髓质→ 消失 2) 体腔上皮 → 次级性索 (含原始生殖细胞 )