Vitrified human ovaries have fewer primordial follicles and produce less antimüllerian hormone than slow-frozen ovaries

Slow-freezing and vitrification methods of human ovarian tissue cryopreservation were compared in terms of primordial follicle count and in vitro antimüllerian hormone (AMH) and estradiol production. Compared with fresh and slow-frozen ovaries, vitrified ovaries contained statistically significantly fewer primordial follicles and produced statistically significantly less AMH in vitro. Estradiol production from slow-frozen and vitrified ovaries was similar but statistically significantly lower than from fresh cultured strips.