Fig. 4:

A small artery in the epineurium of the human cervical vagus (longitudinal axis of the vessel indicated by dashed arrows) enmeshed by a plexus of varicose TH positive sympathetic nerve fibers. Smooth-contoured connective tissue fibers display autofluorescence. Wholemount preparation; extended focus image of 13 stacked single optical sections, z-step 0.5 μm. Body donated to the Institute of Anatomy and Cell Biology, University of Erlangen-Nürnberg, for didactic, reasearch and postgraduate training purposes. Bar 100 μm