Researchers at the Universidad Austral de Chile (Uach) are closer to reaching their goal of cloning the first cow in Chile. Scientists expect Chile's first bovine clone to be born December 2006.

The scientific breakthrough, announced on this day in 1997, proved that geneticists could clone an adult mammal, giving rise to a new era of ethical debate and experimentation ...

Cloning from somatic cells has become an established, albeit still crude, technology, in academic and industrial circles—three years after the first report, somatic cell nuclear transfer has ...

Indeed, shortened telomeres have been seen in cloned sheep, although the reverse is true for cloned cows. Now in the 21 September Nature Wakayama et al. report that mice reiteratively cloned for up to ...

X-chromosome inactivation, the largest epigenetic event known, involves random silencing of one of the two X chromosomes in the cells of female mammals. In an ...