About the Authors
Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Generated chimaeric mice: JG. Conceived and designed the experiments: VE CEK ET JED ST. Performed the experiments: VE CEK ET JED ST. Analyzed the data: VE CEK ET JED ST. Contributed reagents/materials/analysis tools: VE CEK ET JED ST. Wrote the paper: VE CEK ET.