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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Menopause. 2013 Mar;20(3):329–335. doi: 10.1097/GME.0b013e3182698f80

FIG. 7.

FIG. 7

Mean bioactive LH concentration relative to GnRHa treatment in aging female macaques. A single dose (0.25 mg/kg of body weight) of GnRHa (leuprolide acetate) was administered intramuscularly. Bioactive LH in the three serum samples before the hCG challenge was measured for LH. Friedman repeated-measures analysis of variance on ranks was conducted for comparison. Levels not linked by the same letter indicate a statistically significant difference (P<0.05). GnRHa, gonadotropin-releasing hormone agonist; LH, luteinizing hormone.