carolyn johnson(@Carolynyjohnson):Today in 🤯 science: A team led by @Sergiu_P_Pasca engineered mice to be missing a large swath of their brains. Next, they transplanted human brain organoids, which grew and filled in the void. They're still mice, but with a human-dominated cortex.

carolyn johnson

@Carolynyjohnson

science reporter @nytimes, former @WashingtonPost, @BostonGlobe, prefer to explore the world by bicycle, carolyn.johnson@nytimes.com, Signal: carojo.55

Joined September 2007

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carolyn johnson@Carolynyjohnson

2026.09.16 22:49

Today in 🤯 science: A team led by @Sergiu_P_Pasca engineered mice to be missing a large swath of their brains. Next, they transplanted human brain organoids, which grew and filled in the void. They're still mice, but with a human-dominated cortex.