
Keywords: CTb، واحد توکسین کولر B; ANOVA, analysis of variance; CTB, cholera toxin B subunit; DR, dorsal raphe; ERα/ERβ, estrogen receptor-α/β; LPO, lateral preoptic area; MPA, medial preoptic area; OVX, ovariectomized rats; OVX + E, ovariectomized rats receiving estradiol valerate; OVX +