Cutaneous distribution of sympathetic postganglionic fibers from stellate ganglion: A retrograde axonal tracing study using wheat germ agglutinin conjugated with horseradish peroxidase.

Sympathetic postganglionic cells of the stellate ganglion (SG) projecting to the skin in young dogs were labeled retrogradely with wheat germ agglutinin conjugated with horseradish peroxidase (WGA-HRP). After application of WGA-HRP into the dermis and/or subcutaneous tissue of the upper extremity, numerous labeled cells were observed in the SG. The sympathetic postganglionic fibers from the SG were distributed in the skin area between the third cervical vertebra and the level of the thirteenth rib.