Michael R P, Zumpe D
Science. 1978 Apr 28;200(4340):451-3. doi: 10.1126/science.417398.
Ejaculations decreased and mount latencies increased when intact males were paired regularly over a 3.5-year period (3180 tests) with ovariectomized females made constantly receptive by daily injections of estradiol. The deterioration in potency was abruptly and completely reversed by substituting a group of new but similarly treated females for the original ones.
在3.5年的时间里(3180次测试),当完整的雄性与通过每日注射雌二醇而持续处于接受状态的去卵巢雌性定期配对时,射精次数减少,爬跨潜伏期增加。通过用一组新的但同样处理的雌性替代原来的雌性,性能力的衰退会突然且完全逆转。