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Brief Communication

Nature Cell Biology 9, 1098–1100 (1 September 2007) | doi:10.1038/ncb1632

A concentration-dependent switch in the bacterial response to temperature

Hanna Salman & Albert Libchaber

We observed that bacteria grown below a critical concentration, in batch-mode cultures, swim towards warm regions when subjected to a temperature gradient. Above that concentration, they swim towards colder regions.