FIGURE 6.

Numbers of oxytocin receptor‐expressing cells in various brain regions in oxytocin receptor‐Venus knock‐in heterozygous female mice. The numbers of oxytocin receptor‐expressing cells (Venus‐immunoreactive cells in oxytocin receptor‐Venus knock‐in heterozygous mice) were not significantly different between mice exposed to distressed cage mates and those exposed to non‐distressed cage mates in the anterior olfactory nucleus, prelimbic cortex, infralimbic cortex, cingulate cortex, insular cortex, dorsal part of the lateral septum, ventral part of the lateral septum, medial amygdala, nucleus accumbens, posterior intralaminar thalamic nucleus, medial preoptic area, ventromedial hypothalamus, periaqueductal grey and nucleus tractus solitarii. The numbers of animals in the groups for non‐distressed control cage mates and for distressed cage mates were 7‐9 and 8‐11, respectively. The maximum, upper quartile, median, lower quartile and minimum values are shown. NS, not significant (Mann‐Whitney U test)