New findings indicate that reimplanted childhood testicular tissue can produce sperm in adulthood, supporting experimental fertility preservation strategies.

Researchers at Israel's Bar-Ilan University have grown "laboratory testicles" they hope could eventually ease male infertility, which affects 10% to 15% of American men. This is pretty nuts — ...

For the first time, scientists have grown three-dimensional, miniature versions of testicles in the lab, using mouse cells. The lab-grown testicles survived in a dish for up to nine weeks and closely ...