In two papers published earlier this year in the journal Nature, the researchers reported that they'd been able to transform ordinary mouse cells into versatile stem cells by exposing them to a mildly acidic environment. Scientists hope to harness stem cells to grow replacement tissue for treating a variety of diseases.
But not long after, a government-funded institution in Japan accused one of their scientists — a main author of the research — of falsifying data.
On Wednesday, Nature released a statement from the scientists. They acknowledged "extensive" errors and said they couldn't say "without a doubt" that their method works.