Tiny human almost-brains made in lab

Largely left to their own devices, human stem cells knitted themselves into tissue with a multitude of brain structures and specialized cadres of neurons in a form reminiscent of the brain of a nine-week-old fetus, scientists report August 28 in Nature .

http://www.sciencenews.org/view/generic/id/352830/description/Tiny_human_almost-brains_made_in_lab