Fifty-nine years after James Watson and Francis Crick deduced the double-helix structure of DNA, a scientist has captured the first direct photograph of the twisted ladder that props up life.
Enzo Di Fabrizio, a physics professor at Magna Graecia University in Catanzaro, Italy, snapped the picture using an electron microscope.
Previously, scientists had only seen DNA's structureindirectly. The double-corkscrew form was first discovered using a technique called X-ray crystallography, in which a material's shape is reconstructed based on how X-rays bounce after they collide with it.
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