Seamless site-directed mutagenesis is an important technique for studying protein functions, tuning enzyme catalytic activities and modifying genetic elements in multiple rounds because it can insert, ...

Cloning promises genetic copies, but a growing body of research across dogs, mice, cattle, and primates shows that clones begin diverging from their donors almost immediately. Thousands of unique ...

A team of American researchers has created cloned monkey embryos using a variation of the technique used to clone Dolly the sheep, and extracted stem cells from the early-stage embryos. The work ...