But then the journal Cell Stem Cell—always on my nightstand—reported that scientists at the University of Wisconsin had not only perfected a way to create brain tissue this way but could create brain cells that mimicked the behavior of real ones, and I knew that the breakthrough was real. Kudos to the Badger State scientists for figuring out that arranging the printed brain cells side by side, like a row of stick pretzels or a batch of linguine, would allow neurons to communicate just like those in a conventional brain.
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