Source: Scientific American
Date: October 24, 2007
Summary:
An accidental discovery could pave the way to one day coaxing stem cells to develop into human eyes in the lab. A team of scientists at the University of Warwick in England studying the development of motility in frogs found that a certain ectoenzyme (a cell-surface protein) injected into a tadpole embryo triggered the development of tissues that eventually form eyes.
