Healthy Baby Mice from Frozen Testicle Tissue

Healthy offspring has been produced using sperm growth from the frozen testicle tissue of newborn mice, in a hopeful development for men left infertile by childhood cancer treatment, researchers said Tuesday. In a process called spermatogenesis, the sperm was grown in a lab from testicle tissue that had been frozen for more than four months, they said, then deposited directly into immature egg cells to yield mouse babies. The offspring were healthy and ...