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Secret second code found hiding within human DNA

Scientists have long believed that DNA tells the cells how to make proteins. But the discovery of a new, second DNA code overnight suggests the body speaks two different languages.

The findings in the journal Science may have big implications for how medical experts use the genomes of patients to interpret and diagnose diseases, researchers said.

The newfound genetic code within deoxyribonucleic acid, the hereditary material that exists in nearly every cell of the body, was written right on top of the DNA code scientists had already cracked.

Rather than concerning itself with proteins, this one instructs the cells on how genes are controlled.

Its discovery means DNA changes, or mutations that come with age or in response to viruses, may be doing more than what scientists previously thought, he said.

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