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Neurobiology and Genetics

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A tiny neural network is sufficient to control the daily rhythm of the fruit fly, Drosophila melanogaster. Researchers at the University of Würzburg have shown that only four specialized nerve cells are necessary to drive the animals' endogenous clock.

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Image showing all the neurons (color-coded based on type) that make up the Drosophila circadian clock network. (Image: Nils Reinhard)

Circadian clocks control physiological processes and behavior in virtually all living organisms. Now an international research team led by researchers from the University of Würzburg has created a detailed map of the internal clock in the brain of the fruit fly.

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