Fig. 3
From: Vitrification freezing of large ovarian tissue in the human body
Comparison on follicle morphology among the three groups (H&E, × 400). (a) The morphology of a normal primordial follicle in the vitrification freezing group manifested that the follicle morphology was round, the distribution of granule cells was relatively even, and the oocyte envelope was complete. (b) The morphology of an abnormal primordial follicle and secondary follicle (arrow) in the programmed freezing group manifested that the distribution of granule cells was not even, the morphology was irregular, and the oocyte envelope was incomplete. (c) Morphology of a normal primordial follicle in the fresh group