Proteins snap those wrinkly fingers back into shape

You know how your fingers wrinkle up in the bath? The outer layer of your skin absorbs water and swells up, forming ridges – but quickly returns to its old state when dry. Two physicists, Professor Roland Roth of Tübingen University and Dr. Myfanwy Evans at Erlangen University have shown just why skin has this remarkable ability. Their conclusions were published recently in the journal Physical Review Letters.

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