Expression of KNDy receptor genes in the ARC-ME of adult female rhesus macaques across the menstrual cycle. The values represent the means (±sem) of GPR54 (A), NK3 (B), and KOR (C) during the EF, LF, and ML phases of the cycle. No changes in the level of GPR54, NK3, or KOR were detected. P > 0.05, ANOVA followed by Student-Newman-Keuls test.