Figure 2From: Preservation of mouse ovarian tissue follicle morphology and ultra-structure after vitrifying in biotechnological protocols Photomicrograph of primordial or early primary follicle intermediary follicle in the CV7 group showing the oocyte O encircled by one layer of both flattened and cuboidal granulosa cells GC. Note the slightly centric nucleus N, a homogeneous basement membrane BM, normal mitochondria m and a narrow perivitelline space PS to form zona pellucid, A; TEM: Ć4646, B; TEM: Ć6000.Back to article page