Norris M L, Adams C E
J Reprod Fertil. 1979 Mar;55(2):457-61. doi: 10.1530/jrf.0.0550457.
Observations were made on vaginal smear pattern, mating, rate of egg transport and preimplantation development in cuis. In 39 of 45 females (87%) vaginal opening occurred within 2 days of pairing, and in 44 (98%) within 5 days; 36 of the 44 females (82%) mated. By the morning of Day 2, eggs were no longer recovered from the ampulla, having all passed into the isthmus, where they remained till Day 4, p.m. Uterine entry was complete by Day 5, a.m. Uterine blastocysts were no longer recoverable on the morning of Day 6. There was no evidence of blastocyst expansion or zona shedding before implantation.
对豚鼠的阴道涂片模式、交配情况、卵子运输速率和植入前发育进行了观察。45只雌性豚鼠中有39只（87%）在配对后2天内出现阴道口开放，44只（98%）在5天内出现；44只雌性中有36只（82%）进行了交配。到第2天上午，壶腹部不再能回收卵子，所有卵子都已进入峡部，它们在峡部一直停留到第4天下午。子宫进入在第5天上午完成。第6天上午不再能回收子宫内的囊胚。在植入前没有囊胚扩张或透明带脱落的迹象。
