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Hub cells in the brain keep the body clock on time — Level A1 — white mouse lot toy

Hub cells in the brain keep the body clock on timeCEFR A1

24 Dec 2025

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Adapted from Washington U. in St. Louis, Futurity • CC BY 4.0

Photo by James Wainscoat, Unsplash

Level A1 – Beginner
2 min
75 words
  • The body has a daily clock inside.
  • A small brain area controls that clock.
  • Many tiny cells in the area work together.
  • Scientists watched cell activity for many weeks.
  • They built a new computer tool to study cells.
  • The tool mapped connections between many cells.
  • A few hub cells make others work together.
  • If hub cells are removed, rhythms stop.
  • This finding shows hub cells are critical.
  • Researchers hope to help people with shift work.

Difficult words

  • control — make something work in a certain way
    controls
  • activity — action or movement of something
  • connection — a link between two things or people
    connections
  • hub — a central part that links many others
  • rhythm — a regular pattern in time
    rhythms
  • critical — very important for a result
  • researcher — a person who studies and tests things
    Researchers

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

Discussion questions

  • Do you work at night or in shifts?
  • Do you sleep at the same time every day?
  • Have you used a computer to study something?

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