R Reports - It's being heralded as a major scientific discovery.....that has the potential to begin a new age of personalised medicine.
Scientists then injected the cells into mouse embryos, showing that they could grow into tissues and organs.
"Nobody believed me when I told them what I'd found. So one time when I was lying awake in bed at night, I told myself that I'd scrap the experiment completely if I didn't get results the next day. Well that 'next day' sort of turned into five years."
The study published in the journal Nature reported research is now with human blood.
The breakthrough is being hailed by scientists because attempts to make stem cells have long been fraught with difficulties.
They say if it can be applied to human tissue, it could make the technology cheaper, faster and safer, creating patient-matched stem cells that can repair damaged or diseased organs.