Then they replace the nucleus with a nucleus from an adult animal, electrically stimulate the egg to start its development and implant it in the prospective mother's womb.
More than 1m operations had been undertaken by the end of 2010 and, such is the success of the implant, it is likely that by the 50th anniversary of its inception more than 2m stems will have been inserted.
What if you made it so you could implant it totally inside the body as well?
Implant it convenient but doesn't work as well as external hearing aids.
Its device, the HeartMate, costs about $65,000, and the surgery to implant it about $100,000.
Sales will begin after doctors receive mandatory training on how to implant it, said the manufacturer, Organon USA.
A few years after implant, it began disintegrating in patients, shedding metallic debris that has left some patients crippled.
Cloning mammals is a wildly inefficient process that can require hundreds of attempts both to create an embryo and to implant it successfully.
While doctors for years have been implanting hearing devices in the middle ear, the Lyric is not an implant: it can be removed with a small magnet.
"Little by little he's trying to implant it, but he's respecting the essence of Mexican soccer, the way we play with the ball".
The only reason to implant it is so that it can't be removed voluntarily, which makes it a human rights issue".
