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Babies made using three people's DNA are born free of mitochondrial disease
The method was pioneered by UK scientists to overcome devastating, often fatal inherited diseases.
Watch the moment DNA from a mum and dad is injected into the egg of another woman - the critical step in the creation of a baby made from three people Defective mitochondria can leave the body with insufficient energy to keep the heart beating as well as causing brain damage, seizures, blindness, muscle weakness and organ failure. Prof Sir Doug Turnbull, from Newcastle University, told me: "I think this is the only place in the world this could have happened, there's been first class science to get us to where we are, there been legislation to allow it to move into clinical treatment, the NHS to help support it and now we've got eight children that seem to free of mitochondrial disease, what a wonderful result."
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