Groundbreaking research that uses IVF treatment to stop mothers passing devastating diseases onto their children has been under scrutiny.
A panel of experts is due to report back on the results of a public consultation looking at the ethics of using three people to create one baby.
The technique transfers DNA between human eggs to replace defective parts of body cells, and has been developed by scientists at the Wellcome Trust Centre, at Newcastle University.
However, as Kenny Toal reports - not everyone is in favour of it.
You can watch his full report below.
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