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Effects of kisspeptin on LH secretion. Representative patterns of LH secretion from two women each in the follicular (A and B), preovulatory (D and E), and luteal phases (G and H) of the menstrual cycle. Mean ± sem serum LH for all women in the early follicular (C), preovulatory (F), and luteal phases (I), aligned to the time of kisspeptin administration. Note the different y-axis in panels D–F. Arrows indicate time of kisspeptin administration; arrowheads indicate peaks of pulses.
