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Lab-grown brain-like tissue without animal materials — Level A1 — a mouse sitting on top of a wooden table

Lab-grown brain-like tissue without animal materialsCEFR A1

6 Dec 2025

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Adapted from Jules Bernstein - UC Riverside, Futurity • CC BY 4.0

Photo by Matthew Mejia, Unsplash

Level A1 – Beginner
2 min
71 words
  • Scientists grew brain-like tissue in the lab.
  • The tissue grew without animal materials.
  • Living human cells live inside the tissue.
  • A new support helps cells attach and grow.
  • The support has many small holes inside.
  • The holes let oxygen and food move.
  • Cells can form networks like a brain.
  • Doctors can test medicines on these tissue models.
  • This may reduce the use of animals.
  • Researchers want better tests for diseases.

Difficult words

  • tissue — group of similar cells in the body
  • cell — small living unit of an animal or plant
    cells
  • support — material used to hold and help cells grow
  • oxygen — gas that animals and cells need to live
  • medicine — drug used to treat illness or symptoms
    medicines
  • disease — illness that changes how the body works
    diseases

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Have you ever visited a science lab?
  • Would you be happy if scientists used fewer animals?
  • Would you like to work with cells in a lab?

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