The patient, a 42-year-old man, underwent spermatologic and genetic analysis during an infertility evaluation solicited by him and his partner after miscarriage. He and other male members of his ...

Your testicles are constantly producing sperm but a full regeneration cycle can take over 2 months. You produce sperm every day, but a full sperm regeneration cycle (spermatogenesis) takes a little ...

Paterna Biosciences says it has determined the set of instructions needed to turn sperm-making stem cells into "normal, mature" sperm.

Male infertility is on the rise, with significant declines in sperm quantity and quality occurring across the human population worldwide in the past two decades. The reason for this is poorly ...

The creation of sperm in mammals, known as spermatogenesis, is critically impacted by temperature. A very small increase results in a significant reduction in the little swimmers. Peto’s paradox ...