Science 8 sources · today 8 articles

Scientists Replace Mouse Brain Cortex With Human Neurons in Landmark Study

Researchers have successfully integrated human neurons into mouse brains, creating powerful new tools for studying brain diseases but raising pressing ethical questions about animal experimentation.

Read the full story → · Latest coverage 16 Sept 2026, 4:17 pm UTC

Key moments · 4

Human neurons flourish after being implanted in mouse brains

Science Magazine ↗

Scientists grow organoids to fill mouse brains missing cortex

STAT News ↗

Mice with human cortex cells tracked in behavioral experiments

MIT Technology Review ↗

Brain organoids restore some functions in mice with reduced cortex

New Scientist ↗

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8 articles

  1. Part-human part-mouse brain developed in science breakthrough
    BBC News - Science & Environment Science
  2. Scientists Grew More Human Brain Tissue in a Mouse Than Ever Before—and People Have Questions
    Gizmodo Tech
  3. Human organoids restore cognition in mice with half a brain
    New Scientist
  4. Mice with human brain cells offer a tool to study disease. Ethicists ask: What's next?
    NPR News
  5. STAT+: Scientists made mice with half a brain. Then they filled them with human organoids
    STAT News