abnormal neuron physiology, abnormal neurotransmitter uptake, abnormal response to new environment, abnormal response to novel object, abnormal response to social novelty, abnormal serotonergic neuron morphology, abnormal sleep pattern, abnormal small intestinal crypt cell proliferation, abnormal small intestinal transit time, abnormal small intestine crypts of Lieberkuhn morphology, abnormal social investigation, abnormal thermal nociception, behavioral despair, cardiac fibrosis, decreased cardiac muscle contractility, decreased exploration in new environment, decreased locomotor activity, decreased physiological sensitivity to xenobiotic, decreased serotonin level, decreased small intestinal villus height, decreased vocalization, enhanced behavioral response to xenobiotic, enhanced conditioned place preference behavior, growth/size/body region phenotype, heart valve hyperplasia, impaired behavioral response to xenobiotic, increased brain weight, increased physiological sensitivity to xenobiotic, increased right ventricle systolic pressure, increased serotonin level, increased startle reflex, no abnormal phenotype detected, postnatal lethality, incomplete penetrance, social withdrawal