Nadler R D, Collins D C, Blank M S
J Med Primatol. 1984;13(6):305-14.
Serum luteinizing hormone (LH), progesterone, 17 beta-estradiol, and testosterone were measured during a single cycle each of five female orangutans, and urinary LH was measured in four of those cycles. Midcycle peaks in LH and luteal phase elevations in progesterone (5.7-13.8 ng/ml) suggested that the cycles were ovulatory. 17 beta-Estradiol was elevated at midcycle (163-318 pg/ml) and during the luteal phase (56-136 pg/ml) and testosterone was also elevated at midcycle (143-580 pg/ml). These hormone patterns in the orangutans closely resemble those for chimpanzees, gorillas, and human females.
在五只雌性猩猩的每个单一周期内，测量了血清促黄体生成素（LH）、孕酮、17β-雌二醇和睾酮，并且在其中四个周期中测量了尿LH。LH的周期中期峰值以及孕酮在黄体期的升高（5.7 - 13.8 ng/ml）表明这些周期是排卵性的。17β-雌二醇在周期中期（163 - 318 pg/ml）和黄体期（56 - 136 pg/ml）升高，睾酮在周期中期也升高（143 - 580 pg/ml）。猩猩的这些激素模式与黑猩猩、大猩猩和人类女性的激素模式非常相似。
