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Published online 1 May 2001 | Nature | doi:10.1038/news010503-4
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Rock may have left right behind
Early life may have dashed its ambidexterity on the surface of a rock.
Deep down, we are all left-handed. The amino acid molecules that make up our proteins are of a 'left-handed' variety -- their mirror-image counterparts are excluded from life's chemistry.
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