Evolutionary pressure across male mammals to guarantee the procreation of their own offspring led to a rapid evolution of the testicle. Bioinformatic studies—conducted by an international team of ...

Spermatogenesis in the testicle is controlled by a finely coordinated, complex interplay of the activity of different genes -- also known as gene expression. Hitherto the understanding of these ...

Genes associated with male reproductive biology appear to be under relaxed selective constraint in a primate species with low sperm competition.

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 ...

Testicles of most mammals are cooled in the scrota, and elevated testicular temperatures lead to spermatogenesis failure and male infertility. A research team led by Shosei Yoshida at the National ...

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 ...

Mutations that abolish the activity of luteinizing hormone are rare; they have been reported in five men and one woman. 1–5 The phenotypes of these persons suggest that luteinizing hormone is not ...

A cross-college collaboration is opening new doors in the study of male infertility by breaking down a key step in sperm formation. Isolating the intricacies of meiotic sex chromosome inactivation ...