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Multiarchitectonic characteristics of the pallidal and subpallidal areas on photomicrographs of frontal sections stained for a myelin, b AChE or c immunoreacted for CB and d CR. Note the clear contrast between al (only moderately stained) and the GPi (enhanced in CB, c), and the area underneath the pallidum (or sublenticular area, enhanced for CR, d). A continuity between the sublenticular area and the ansa peduncularis (ap) is seen with CR immunostaining. Case Hb4. Scale bar: 3 mm
