Silverman E M, Silverman A G
Exp Aging Res. 1979 Apr;5(2):155-9. doi: 10.1080/03610737908257194.
Routine cervicovaginal (PAP) smears from 1,239 women from ages 16 to 92 were examined retrospectively for spermatozoa. The prevalence of spermatozoa in cervicovaginal smears was found to be highest (25%) in the 20-24 year age group, and fell gradually to 20% in the 70-79 year age group. The oldest woman in the study to have spermatozoa in her smear was 76 years old. In order to evaluate persistence of spermatozoa in the lower genital tracts of women, 697 smears were prepared from women who had volunteered the time of last coitus, birth control methods, and douching practices. Spermatozoa could be found in smears taken up to 10 days after coitus, although their number decreased due to vaginal douching and birth control. These findings confirm that coital activity in aging women can persist into the eighth decade of some women's lives.
对1239名年龄在16至92岁之间女性的常规宫颈阴道（巴氏）涂片进行回顾性精子检查。发现宫颈阴道涂片精子阳性率在20 - 24岁年龄组最高（25%），在70 - 79岁年龄组逐渐降至20%。该研究中涂片发现有精子的最年长女性为76岁。为评估精子在女性下生殖道中的存留情况，对697名自愿提供末次性交时间、避孕方法和冲洗情况的女性进行涂片检查。性交后长达10天的涂片均可发现精子，不过由于阴道冲洗和避孕措施，精子数量减少。这些发现证实老年女性的性交活动在部分女性中可持续至八十多岁。
