Figure 4. Microscopic and ultrastructural evaluation of an oocyte from patient 2. Coarse granules in the PVS can be clearly observed at 200X (A, arrow) magnification with an inverted microscope. ZP, zona pellucida; PVS, perivitelline space; M, mitochondria; MV, mitochondria-vesicle complex; Ld, lipid droplet.