HANDOUT / REUTERS
January 30, 2014
A mouse embryo formed with Stimulus-Triggered Acquisition of Pluripotency (STAP) cells is seen in this undated image released by RIKEN Center for Developmental Biology on January 28, 2014. In experiments that could open a new era in stem cell biology, scientists have found a simple way to reprogram mature animal cells back into an embryonic-like state that allows them to generate many types of tissue. The research, described as game-changing by experts in the field, suggests human cells could in the future be reprogrammed by the same technique, offering a simpler way to replace damaged cells or grow new organs for sick and injured people. Picture released on January 28, 2014.