Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Kerato- (prefix): Kerato- is a confusing
prefix since it can refer to the cornea (as in
keratitis and keratocornea) or to "horny" tissue (as in
keratin and keratosis).