Human brain cells transplanted into mice in ‘most extensive’ integration ever

TL;DR - Lab-grown human brain organoids were transplanted into mice missing a key brain region and achieved unusually extensive integration. The model could provide a new platform for studying developmental brain conditions and testing potential drugs.

• The transplanted human brain cells wired into the host mice’s brains.
• Nature describes the integration as the most extensive demonstrated to date.
• The approach uses mice lacking a key part of the brain, potentially enabling researchers to examine how human neural tissue develops and connects.
• The provided summary does not specify functional outcomes, disease models or drug-testing results.