Mice have biological clock for smell

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I smell a rat Researchers have found that the sense of smelling in mice is affected by a biological clock devoted entirely to olfaction -- smelling stuff like sleeping and waking is on a daily cycle. Credit: Washington University in St. Louis
'I smell a rat!' Researchers have found that the sense of smelling in mice is affected by a biological clock devoted entirely to olfaction -- smelling stuff, like sleeping and waking, is on a daily cycle. Credit: Washington University in St. Louis

Biologists at Washington University in St. Louis have discovered a large biological clock in the smelling center of mice brains and have revealed that the sense of smell for mice is stronger at night, peaking in evening hours and waning during day light hours.


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