In this slide show showing somatic cell nuclear transfer, as it's also known, we explain how we clone egg cells to create embryonic stem cells in our lab at Children's Hospital Boston. Unless ...

A small but valuable change to the procedure for rolling-circle amplification creates a useful cell-free cloning method. The authors were familiar with this polymerase because of their previous ...

It was the first time scientists had been able to clone a mammal from an adult cell, taken from the udder. Science Photo Library Dolly the sheep was the first mammal to be cloned 20 years ago ...

Due to the very small number of live offspring obtained, however, the relationship between cloning success or failure and the culture condition and cell cycle of donor cells cannot be established.