A Hidden Drawing Lies Beneath the 'Mona Lisa,' New Ultra-High-Resolution Images Reveal

A new high-tech study of Leonardo da Vinci's 'Mona Lisa' suggests that the Renaissance master made the painting using a preparatory sketch.

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X-rays reveal new secrets about Leonardo da Vinci's Mona Lisa

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A Hidden Drawing Lies Beneath the 'Mona Lisa,' New Ultra-High-Resolution Images Reveal