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Woodcut of the base of the brain from Vesalius' de Humani corporis fabrica (1543), showing the olfactory tracts, but without a clear bulb

(Source: Vesalius' de Humani corporis fabrica. [1543]. Courtesy of the U.S. National Library of Medicine, Bethesda, Maryland. Woodcut print edited by Dr. Douglas J Lanska.)

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