Human 'mini-brain' grown in dish learns to contract muscles

A 'mini-brain' grown in a dish by UK-based researchers using human stem cells has successfully contracted muscles attached to it. Scientists claimed the mini-brain, attached to muscles and a mouse embryo's 1-millimetre-long spinal cord, is comparable to the human foetal brain at 12-16 weeks of pregnancy. "We like to think of them as mini-brains on the move," scientists said.