Testicular tissue transplant shows signs of sperm production 16 years after freezing
Testicular tissue frozen for 16 years from a boy treated for sickle cell disease showed sperm-producing stem cells and mature sperm after grafting in adulthood.
Testicular tissue frozen for 16 years from a boy treated for sickle cell disease showed sperm-producing stem cells and mature sperm after grafting in adulthood.
Scientists derived immature human sperm cells from induced pluripotent stem cells and nurtured them on a mouse kidney for six months.