Scientists Grow Human Brain Tissue Inside Mice

Researchers have successfully placed human brain organoids into the brains of young mice, creating creatures with partly human brain systems.

The Experiment

Scientists took tiny human brain-like structures grown in the lab and implanted them into the outer layer of the brain, known as the cortex, in newborn mice. These human cells grew and connected with the natural mouse brain cells as the animals matured.

Scientific Goals

This method, called developmental xenocortication, helps researchers study how the human brain develops and how brain diseases work. It lets experts look at living human brain tissue inside a living animal to test treatments and understand conditions that affect human mental health.