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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Yersinia
Yersinia: A group of bacteria
some of which are responsible for the bubonic plague (see
Yersinia pestis), intestinal infections and a condition called
mesenteric lymphadenitis that can mimick appendicitis.