In its normal form, however, a protein is more than just a simple string of amino acids.

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Logic, Leibniz said, could be relentlessly boiled down to its skeleton, like a string of simple two-way railroad switches comprising a dizzying and complicated national rail network.

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And if you are stuck for an evening outfit as the nights grow chillier, don't forget the allure of a simple black cashmere polo-neck with black pants, accessorized with a single long string of pearls.

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