So far , the technique of sheep ' s in vitro fertilization ( ivf ) still needs perfection , a lot of problems call for urgent solutions 摘要目前，羊的体外受精技术尚不完善，存在很多问题亟待解决。
The study inoled 125 boys conceied by icsi , 120 conceied by in itro fertilization ( if ) , and 933 naturally conceied boys 该研究纳入了125名icsi男婴， 120名体外受精（ if ）男婴和933名自然受孕的男婴。
The study involved 125 boys conceived by icsi , 120 conceived by in vitro fertilization ( ivf ) , and 933 naturally conceived boys 该研究纳入了125名icsi男婴， 120名体外受精（ ivf ）男婴和933名自然受孕的男婴。
She said the findings meant that men exposed to these chemicals in the womb would be more likely to need if treatment 他说：这个发现意味着母体内的男胎暴露在这些化学物质下，今后需要体外受精的可能性更大。
One - cell embryos were collected with m2 medium the next day ( 24h after hcg injection ) from oviduct of females possessing a vaginal plug 方法1 .超排卵、体外受精及卵细胞的收集取性成熟雌鼠( 4w ， 189 ) ，腹腔注
- 10 - ivm oocytes were fertilized in vitro , and the process of fertilization , early cleavage , and blastocyst formation were recorded 通过体外受精观察比较各组体外成熟卵细胞的受精率、卵裂率和囊胚形成率： 6
Further studies examining the use of ultrasound in in itro fertilization should compare the percentage of lie births with each technique , they add 他们补充到，以后的研究将在活产率方面比较超声引导的体外受精和其他方法。
We should try our best to reserve the salpinx during tubal pregnancy if the patients need to keep their reproductive capabilities 对于输卵管积水行体外受精-胚胎移植者，如对侧卵巢缺如或卵巢功能低下，不宜做预防性输卵管切除术。
External fertilization occurs when gametes are expelled into a watery substrate from the parental bodies before fusion ; it is typical of sporebearing plants 当配子在融合之前从亲本体中排出到有水介质时发生体外受精，这是孢子植物的特征。
It is also seen in in vitro fertilization as several fertilised eggs are implanted into the body to increase the chance of conception 多胎妊娠可能是使用促性腺激素治疗不育，或在进行体外受精时，为了增加受孕机会而将多个受精卵植入体内的结果。
