The ovary substitutes may one day help treat infertility in humans
This success could help the technique gain approval in the U.S.
The future of test tube babies is one step closer to being motherless
And it significantly reduces the risk of passing on faulty mitochondria
But there are some big hurdles before it can become commonplace
Two genes on the X chromosome are all they really need
Fertility treatments are a likely factor
In vitro cuteness
A possible alternative to controversial three-parent babies
The first one could be here by 2016
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