生育专科经过了长期的探索，找到一种途径来检测受精卵或者胚胎以找出主要的异常染色体。
Fertility clinics have long sought a way to check eggs or embryos for major chromosome abnormalities.
以前的研究表明，COX - 2基因敲除的小鼠是不孕的，并且排卵、受精、着床以及蜕膜化均出现异常。
A previous study showed that COX-2-deficient females are infertile with abnormalities in ovulation, fertilization, implantation and decidualization.
肥胖可以导致排卵异常，降低试管内受精等生育治疗措施的成功率，增加流产机会，以及其他怀孕并发症。
Obesity causes problems with ovulation, reduces the success of fertility treatments including IVF, increases the chances for miscarriage and other pregnancy complications.
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