Fight against genetic diseases by DNA previously classed as 'junk'

Our Science Editor Lawrence McGinty explains why DNA, previously classed as having no obvious use, could in fact be used to fight off genetic disease.

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'Junk' DNA could fight disease

Scientists have discovered that huge parts of our DNA - which were previously thought to have no obvious use - could in fact be essential in keeping life going. So-called 'junk' DNA contains millions of 'switches' which can turn genes on or off.