Mini brains may wrinkle and fold just like ours
Growing organoids on glass provides a window into the push and pull of brain cells
![brain](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/12/121117_TS_brain-folds_feat.jpg?fit=860%2C460&ssl=1)
ANOTHER WRINKLE The outer layer of the human brain has distinctive folds. Work with brains growing in lab dishes is showing how the structures may form.
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