More often than not, IVF takes repeated, costly and heart-wrenching attempts.
试管婴儿往往需要经过反复的、昂贵的而且是心痛的尝试。
At the moment human embryonic stem cells usually come from surplus IVF embryos.
目前，人类的胚胎干细胞通常来自于多余的IVF胚胎。
At present, IVF has only a 50 per cent success rate - among the most healthy couples.
目前，试管婴儿的成功率只有百分之五十，而且是在最健康的夫妻身上。
Around 6, 000 babies a year are born in the UK to otherwise infertile couples as a result of IVF.
在英国，每年大概有6000对没有生育能力的夫妇通过试管受精而喜得贵子。
IVF succeeds for only about 45% of women in their mid-30s and for only about 25% of women in their 40s.
对于35岁左右的妇女，试管婴儿成功的只有约45%，而在40多岁时则降为25%。
Which is the best choice: IVF or tubal reversal?
哪一个是最佳选择：IVF或输卵管复通术？
Its IVF success rate has topped 40%, taking the lead in China and the world as well.
试管婴儿成功率达40%以上。 在国内外处于领先水平。
The woman had undergone IVF treatment in the United States before returning to Spain.
在回到西班牙之前，这位妇女曾在美国接受过试管婴儿手术。
Mrs Nargund urges more research into the long-term health problems associated with IVF.
Nargund女士呼吁对IVF相关的长期健康问题要进行更多的深入研究。
But from a clinician's point of view, the ability to time the IVF process is also crucial.
但从临床医生的观点来看，适时进行IVF的能力还是很关键的。
The scientists used mature eggs donated by couples being treated at the University's IVF centre.
科学家们采用了在大学体外受精中心接受治疗的夫妇所捐赠的成熟卵细胞。
Since 1978, an increasing number of children, now approximately four million, have been born thanks to IVF.
自1978年以来，孩童数量不断增长，全球约有近400万人已通过试管育婴技术出生。
If only one more child is desired and the woman is older than 35 years of age, perhaps IVF is the best choice.
如果计划只想再要一个小孩，而且女方年龄已经超过35岁，那么IVF或许是最佳选择。
The pair founded the first ever IVF clinic at Bourn Hall in Cambridge, which now treats around 900 women a year.
他们在剑桥伯恩楼里成立了世界上第一家试管婴儿诊所，现在每年接待大约900位妇女顾客。
Now researchers say they have come up with a way to better estimate a couple's chance of having a child using IVF.
现在，研究人员说，他们想出了一个办法去更好地估计一对夫妇试管婴儿成功的机会。
The HFEA has ordered UK fertility clinics to take steps to reduce the number of twins and triplets born to IVF couples.
HFEA规定英国所有的生育方面的医院都要逐步减少试管受精的双胞胎与三胞胎。
Five other women, all of whom have a history of unsuccessful IVF treatment, are now pregnant after receiving the treatment.
另外五名曾经体外受精失败的妇女，在接受该项治疗之后，目前已怀孕了。
IVF was at the bottom of our list of options because of the cost and the drugs involved, but we didn't have any other option.
因为考虑到费用及药物干预，试管受精是我们选项清单里列在最后的，但是我们没有其他选择。
Doctors at the clinic collected eggs from the woman after stimulating her ovaries with hormones used in standard IVF treatment.
该诊所的医生使用标准体外受精的常用激素刺激该女子卵巢后，采集了她的卵细胞。
"Clinicians know that clinical factors besides age affect IVF outcomes, but there is no way for them to quantify this," she says.
“临床医生都知道，除了年龄的因素，临床因素也会影响试管婴儿的成功率，但这些没办法量化。”她说。
More than 10,000 test tube babies have been born since the birth of Louise Brown and there are now four million IVF babies worldwide.
继露易丝.布朗之后，超过1万个试管婴儿相继出生，现在全球已经有4百万个IVF婴儿。
His paper showed that if Britain supported IVF at the Danish level then its birth rate would probably increase by about 10, 000 a year.
从他的论文中可以看出，如果英国能以丹麦的同等水平支持试管授精的话，其婴儿出生率则将可能以每年一万个婴儿增长。
If you are going to have IVF, my recommendation would be that it makes sense to avoid alcohol all together, from three months beforehand.
如果你想进行试管受精的话，我的建议是，从事先三个月起避免沾酒，这是很明智的。
I know many people will say we were successful because we used this new type of IVF, but I also like to think we chose a propitious time.
我知道很多人认为我们之所以成功，是因为采用了最新的人工受孕技术，但我还是认为我们选择了一个正确的时间。
Controversial: Britain's oldest mother Elizabeth Adeney, 67, who went abroad for IVF, is pictured here with her newborn son in June this year.
引发的争议：67岁的伊丽莎白·阿德尼是英国年龄最大的母亲，她在国外接受试管婴儿手术，图为今年6月她和她新生的儿子。
At these levels of consumption, women were 18% less likely to have a successful IVF baby, while men reduced their chances of fatherhood by 14%.
在这种喝酒程度下，女性成功怀上试管婴儿的可能性会减少18%，男性成为爸爸的可能性也会减少14%。
AFTER marrying in 1997, Randy and Augusta Roman struggled to conceive. They eventually decided that in-vitro fertilisation (IVF) was their best hope.
兰迪和奥古斯塔•罗曼自1997年结婚后就一直努力想怀上个孩子，最后他们下决心将所有希望都寄托在体外授精（in-vitro fertilization，IVF）上。
He was equally prescient on the need for oversight of his powerful technique, advocating in 1971 that a legal authority should be established to control IVF.
他同样也有先见之明，认为有必要对这样强大的技术进行监管。在1971年他提倡建立法律权威部门来监管IVF技术。
People with TSC can consider using pre-implantation genetic diagnosis (PGD) to detect a TSC gene change in embryos created through in vitro fertilization (IVF).
为避免将TSC遗传给下一代，TSC患者可用胚胎植入前遗传学诊断（PGD）技术对体外受精（IVF）形成的胚胎进行TSC基因突变的检测。
The results were particularly impressive because many of the women were on their 'last chance' at IVF — typically aged 39 with two failed IVF cycles behind them.
试验结果之所以令人印象深刻，是因为对许多不孕女性来说，这是自己通过体外受精怀孕的“最后的机会”——这些女性典型的状况是39岁，有过两次失败的体外受精周期。
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