behavior/neurological
• male mice exhibit increased male-male mounting compared with control mice
• male mice fail to exhibit an increase in mounting estrous female unlike wild-type mice
• male mice fail to exhibit a preference for female bedding unlike control mice
• male mice fail to exhibit a preference for female genital odor unlike control mice
• however, treatment with 5-hydroxytryptophan rescues male preference for female bedding
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homeostasis/metabolism
• in the brain of male mice
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