Ultrastructural identification of non-adrenergic inhibitory nerve fibers.

Animals Axons/analysis,drug effects,metabolism Bufo marinus Catecholamines/analysis Dihydroxyphenylalanine/pharmacology Lung/analysis,anatomy & histology,innervation Metaraminol/pharmacology Methylation Microscopy, Electron Microscopy, Fluorescence Muscle, Smooth/anatomy & histology,cytology Norepinephrine/pharmacology Reserpine/pharmacology Sympathetic Nervous System/cytology Vagus Nerve/metabolism

Catecholamines Dihydroxyphenylalanine Metaraminol Reserpine Norepinephrine