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Photomicrograph of a section of the flattened cortex of monkey MCh75 stained for myelin. The section was cut parallel to the pial surface. The myelin-light septum (arrow) marking the hand-face border is clearly visible. Left and right dotted lines respectively mark the fundus and the lip of the posterior bank of the central sulcus. R, rostral; M, medial. Scale bar, 2 mm.
