Many clinics have their own donor egg programmes, where women are happy to help for purely altruistic reasons.

许多诊所有自己的捐助者计划，那里的妇女出于纯粹的利他主义，高兴地给予帮助。

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So how can people who have found a potential egg donor at an Ivy League college tell whether the donor carries genuine smart-kid genes or just pushy-parents genes?

那么那些在常青藤联盟学校找到捐卵者的人怎么能够辨别捐卵人的基因是真正的聪明孩子的基因还是那些要强的家长的基因呢？

youdao

One such couple are Nicola and Nigel Dawson from Bracknell, Berkshire, who are now proud parents to 11-month-old twin girls, Mia and Hannah, conceived in Spain thanks to a Spanish egg donor.

尼古拉和奈杰尔·道森——现在是孩子们骄傲的父母——来自布莱·克内尔，波克夏，就是这样一对夫妇，他们11个月大的双胞胎女儿米娅和汉娜是在西班牙，并在当地捐助者的帮助下怀上的。

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Two main techniques have been shown to work in the laboratory, by using a donor embryo or a donor egg.

BBC: 'Three people, one baby' public consultation begins

His method involves inserting the nucleus from an egg with faulty mitochondria into a donor egg that has had its nucleus removed.

FORBES: UK May Be Close To Approving Nuclear Transfer Technique for IVF

He described the potential of using a patient's own skin cells and a donor egg to produce neural cells that would be injected into the brain.

CNN: Reagan calls for?increased stem cell research