Sperm cells have a monumental task, but their days are numbered. From the moment they're made in the testes to the time they may spend winding their way up the labyrinthine of the female reproductive ...

A new study shows that lab-grown sperm cells can be derived from stem cells. July 9, 2009 — -- The face of infertility-- in literature, in the media, in advocacy groups -- is so predominantly ...

New research shows how sperm RNA changes as men age, revealing a biological shift that may affect reproduction and child ...

Researchers have uncovered a complex biological process that protects germ cells, the precursor cells to sperm, from genetic ...