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The Lee–Boot effect is a phenomenon concerning the suppression or prolongation of oestrous cycles of mature female mice (and other rodents), when females are housed in groups and isolated from males. It is caused by the effects of an oestrogen-dependent pheromone, released via the urine, that acts on the vomeronasal organ of recipients. This pheromone lowers the concentration of luteinizing hormone and elevates prolactin levels, synchronising or stopping the recipient’s cycle. This effect goes some way to explain why spontaneous pseudopregnancy can occur in mice. The same response is invoked from isolated females when brought into contact with urine-soaked bedding from other females’ cages. Removing the vomeronasal organ of recipients causes an ineffective response – indicating that the cues are not mediated by the vomeronasal system.
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- "Mouse Husbandry, Breeding and Development: Pheromone Effects". Transgenic Mouse Facility, University of California.
- Carlson, Neil R. (2013). Physiology of behavior (11th ed.). Boston: Pearson. p. 335. ISBN 0205239390.
- Petrulis, Aras (May 2013). "Chemosignals, Hormones and Mammalian Reproduction". Hormones and Behavior. 65 (5): 723–41. doi:10.1016/j.yhbeh.2013.03.011. PMID 23545474.
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