Scientists Grow Human Cells in Rat Brains to Study Autism, Schizophrenia – WSJ

Bioengineered human tissue transplanted into rat brains generated hybrid neural circuits that affected the animals behavior, researchers said, expanding a pathway for exploring brain development and the mechanics of some diseases.

Neuroscientists at Stanford University transplanted tiny blobs of neural tissue known as organoids into the brains of newborn rats. The human cells grew and made functional connections within the rat brain, generating hybrid neural circuits, the researchers said in a study published Wednesday in the journal Nature.

via www.wsj.com

Little spheres of rat brain in humans might explain some of our politics.