To Study Disease, Scientists Put Human Brain Cells into Rats

Scientists have transplanted human brain cells into the brains of baby rats, where the cells grew and formed connections. The research is part of an effort to study human brain development and diseases affecting this most complex of organs.

Source : https://learningenglish.voanews.com/a/to-study-disease-scientists-put-human-brain-cells-into-rats/6789830.html