<unk>  is an experimental method being used to preserve fertility in pre-pubescent males, or males who cannot produce sperm, to allow them the option of having biological children. Current first line treatment for fertility maintenance in men undergoing treatment which damages testicular tissue is cryopreservation of sperm. In boys yet to start producing sperm this is not possible, so<unk>  has been proposed as alternative therapy. This method is still experimental and not widely clinically available, and how to restore fertility with cryopreserved tissue is unknown and experimental.
Cryopreservation of testicular tissue
Ovarian tissue cryopreservation
Embryo cryopreservation
Testicular sperm extraction
Semen cryopreservation
Gamete intrafallopian transfer
Bioidentical hormone replacement therapy
Sex reassignment surgery 