The Brain Can Recall and Reawaken Past Immune Responses
Dogs that habitually hear a bell at chow time become classically conditioned to drool at the mere chime, as the physiologist Ivan Pavlov showed in the 1890s: Their brains learn to associate the bell with food and instruct the salivary glands to respond accordingly. More than a century later, in a paper published today in Cell, the neuroimmunologist Asya Rolls has shown that a similar kind of…
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