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有人报告母马和蝙蝠的受精卵与未受精卵在输卵管内的运行有明显不同。未受精卵常滞留于输卵管内,而受精后的胚胎能正常进入子宫。此现象提示胚胎对自身运行到着床部位有一定调节能力。虽然其他哺乳动物的受精卵和未受精卵都能到达子宫,但尚不知它们在输卵管内的运行有无差异。本文旨在比较假孕大鼠体内受精卵与未受精卵的运行。作者将光照控制,温度恒定,性周期每4天一次的Sprague—Dawlay雌大鼠在动情前期那天晚上机械刺激子宫颈造成假孕。接着用有生育力和无
It has been reported that fertile eggs of mares and bats behave differently from uncoated eggs in the fallopian tubes. Unfertilized eggs often remain in the fallopian tubes, and fertilized embryos can normally enter the uterus. This phenomenon prompted embryos to run to the implantation site has a certain ability to adjust. Although other mammalian fertilized eggs and unfertilized eggs can reach the uterus, it is not known whether they operate within the fallopian tubes. The purpose of this article is to compare the operation of zygotes and unfertilized eggs in pseudopregnant rats. Sprague-Dawlay female rats, light-controlled, temperature-stable and sexually cycled every 4 days, mechanically stimulate the cervix causing false pregnancy on the night before estrus. Then use fertility and nothing