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Onuf’s nucleus motor neurons (MNs). Localization of Onuf’s MNs (in black those innervating ischiocavernosus muscle, in the dorsolateral column) in rat spinal cord, by horseradish-peroxidase retrograde transport, at low (A) and high magnification (B,C), in a neutral red-stained section. Dendrites form characteristic dendritic bundles. The dotted line in panel (A) outlines the gray matter. Scale bars: 100 μm in panels (A,B), 10 μm in panel (C).
