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Original drawing from Charcot’s notebook illustrating the limit of a lesion in the protuberance. Handwritten legend by Charcot; on the right: A. periphery outside the plaque. B. the plaque. Bottom: Causse [patient’s name] Protuberance. Chromic acid. Source: Département de Neuropathologie, Groupe Hospitalier Pitié-Salpêtrière-Charles Foix, Musée de l’Assistance Publique-Hôpitaux de Paris.
