The human body is made up of several organs composed of tissues that enable them to perform a particular function.

PALO ALTO, Calif., Nov.

PALO ALTO, Calif., Oct.

A mechanism that regulates stem-cell differentiation in mice testes suggests a similar process that may trigger degenerative disease in humans.

In studies on cancer, heart disease, neurological disorders and other degenerative conditions, some scientists are moving away from the “nature-versus-nurture” debate and are finding you’re not a creature of either genetics or environment, but both – with enormous implications for a new approach to health.