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No, I cannot accept that description. I recognise that my hon. Friend has objections to the procedure, but I do not recognise his description. Nuclear DNA is not affected; mitochondrial DNA is different.
As well as paying tribute to the scientists at Newcastle university, I want to pay tribute to the Lilly Foundation, a charity founded by families who have lost their children to serious mitochondrial disease, and who have shown us the human suffering behind this scientific advance. Many right hon. and hon. Members, like me, have constituents who are affected, and I am sure that some Members will talk about such families in their own speeches.