Liver disease, due to viral infections, alcohol abuse, obesity, or cancer, accounts for 1 in every 25 deaths worldwide. A liver transplant can be life saving for people with end-stage liver disease.

The research offers the first proof that human embryonic stem cells -- vaunted for their potential to turn into every kind of human cell, at least in laboratory dishes -- can become functional human ...

Hematopoietic stem cells are defined by their ability to self-renew and to differentiate into all blood cell lineages. Human stem cell populations are frequently tested by their ability to populate ...

Congress also faces these questions as it decides the fate of the Human Cloning Act of 2005 and the Human Chimera Prohibition Act of 2005. Both bills are currently in committee, and if passed, would ...