Doctors stunned the world last week when they revealed that they had helped a 27-year-old woman give birth—using ovarian tissue cryopreserved a decade earlier. The mother battled sickle cell anemia as ...

For instance, some 3% of newborn boys have undescended testes (cryptorchidism). If testes remain in the abdomen after puberty, sperm production is suppressed and surgical intervention is needed to ...