Synapses of adrenergic fibres.
D000818:Animals; D006168:Guinea Pigs; D007082:Ileum; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D009197:Myenteric Plexus / Q000166:cytology*; D009413:Nerve Fibers, Myelinated / Q000166:cytology; D013564:Sympathetic Nervous System / Q000033:anatomy & histology*; D013569:Synapses / Q000166:cytology*; D013572:Synaptic Vesicles