When comparing female guinea pigs to male guinea pigs (boars), the most basic difference is in their sexual organs.These sex organs are on the underside of a guinea pig at the base of its tail. A ...

Researchers have discovered that the skeleton acts as a regulator of fertility in male mice through a hormone released by bone, known as osteocalcin. Researchers at Columbia University Medical ...

NEW YORK (February 17, 2011) – Researchers at Columbia University Medical Center have discovered that the skeleton acts as a regulator of fertility in male mice through a hormone released by ...