These 3D model brains with cells from several people are first of their kind
Briefly

For the first time, researchers have grown 3D models of the brain that include a wide variety of cell types from several people, offering potential insights into personalized drug responses.
Chimeroids, 3D models combining cells from multiple donors, could serve as 'avatars' to predict individual responses to therapeutics, demonstrating a significant advancement in brain organoid technology.
The study's senior author envisions a future where Chimeroids could anticipate individual reactions to new drugs, indicating the transformative potential of this research.
Read at Nature
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