A circadian clock transplant gives E. coli rhythm

The time tinker could be used to treat jet lag, produce drugs

Circadian rhythm graphs

DAILY RHYTHM  By transplanting a molecular clock into E. coli bacteria, researchers can control the timing of the production of a protein that glows green, as seen in this diagram.

Anna H. Chen

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A ticking clock in the belly warned Captain Hook of a crocodile’s approach.