Man produces sperm from testicular tissue frozen as a child in breakthrough trial

Exclusive: Sperm re-transplant offers hope that boys left infertile by chemotherapy could have biological children one day In a groundbreaking fertility trial, a man whose testicular tissue was frozen before he underwent chemotherapy as a child to be re-transplanted 16 years later has been able to produce sperm. It is the first time a transplant of cryopreserved prepubertal testicular tissue has been demonstrated to restore sperm production in an adult patient. The 27-year-old man had the sample