Wheat germ agglutinin—horseradish peroxidase conjugate (WGA—HRP) was injected into
nodose ganglia of rats. In the esophagus and cardia, dense networks of anterogradely
labeled fibers and beaded terminal-like arborisations were observed around myenteric
ganglia after combined histochemistry for HRP and acetylcholinesterase. The muscularis
externa and interna proper were free of label except for a few traversing fibers. Submucosal
and mucosal labeling was rather sparse except for the most oral part of the esophagus …