Search for: [Description = "Every other day from the 4th to the 11th day postpartum mother rats and their litters were exposed to a lowering of the ambient temperature by 5°C for 2 hours \(Experiment I\), while on the 12th day the temperature was lowered by 10°C \(EXperiment II\). The drops in temperature resulted in a considerable increase in the total duration of nest\-building activities by mother rats. The increase was easily perceptible within the first 30 minutes of cooling."]

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