Scientists Implanted Tiny Human Brains Into Mice

Scientists at the Salk Institute implanted lentil-sized human brain organoids into the heads of mice, then closed it with a transparent window. The mice looked and behaved like ordinary mice, while supplying blood and nutrients to keep human brains developing for months. Researchers created the human cerebral organoids to study schizophrenia, but the technique could be used for much more in the future, like serving as cortical repair kits for people with brain injuries or developmental problems. Scientists created the first human brain organoids from stem cells in 2013.
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