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Photomicrograph of a representative microinjection site (white arrow) in the right locus coeruleus (LC). The coronal section is stained with Cresyl violet. The black arrow identifies the left LC. The dashed semi-circle illustrates how the punch tool was applied to obtain the core LC and pericoerulear areas; the cerebellum would have been removed prior to punching. 7n: 7th cranial nerve
