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PTTH neurons (green) connect the circadian clock (magenta) of the brain with the peripheral clock in the prothoracic gland. (Foto: AG Wegener)

Multiple biological clocks control the daily rhythms of physiology and behavior in animals and humans. Whether and how these clocks are connected with each other is still a largely open question. A new study now shows that a central clock governs the circadian rhythms in certain cases.

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An electron microscope image of a so-called micropillar with an integrated quantum dot that is capable of emitting single photons. The pillars, which are a hundred times thinner than a hair, are made at the University of Würzburg.

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

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