K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K x B x K y A y K
Two papers published in Nature in January 2014 promised to revolutionize the way stem cells are made by showing that simply putting differentiated cells under stress can 'reprogram' them and make them pluripotent ? able to develop into any type of tissue in the body. But soon, errors were found in the papers, and attempts to replicate the experiments failed. Haruko Obokata, the lead author, was found guilty of misconduct, and the RIKEN Center for Developmental Biology, where she worked, was threatened with dismantlement. Five months after publication, Nature published retractions of the papers, but the aftermath of the episode is likely to endure for much longer.