
Keywords: منطقه هسته ای; Porcine; Ovarian tissue; Preantral follicles; Vitrification; Cryopreservation; CPA; Cryoprotective Agent; PAF; Preantral Follicles; BS; Base Solution; NR; Nuclear Roundness; OR; Oocyte Roundness; NA; Nuclear Area; CA; Cytoplasmic Area; TA; Total Area;