Demonstration and analysis of an alarm pheromone in mice.

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Abstract
In an experiment with 31 C57Bl/6J mice, Ss exposed to the odor of a stressed conspecific communicator-S were averse to the source of the odor, although prior to the stress they preferred the source of the communicator's odor. No correlation existed between the communicator urinating or defecating and the recipient showing an aversion to the odor. Ss that were socially isolated for 12 wk. after weaning could emit the odor when stressed, but responded inappropriately. After 15 wk. of social experience, the odor aversion of these isolates improved, but was not restored to normal. Removal of the olfactory mucosa abolished the odor aversion, indicating the presence of a true pheromone. (19 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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