Fig. 5From: C-fibers may modulate adjacent Aδ-fibers through axon-axon CGRP signaling at nodes of Ranvier in the trigeminal systemImmunolocalization of 5-HT1B and 5-HT1D receptors in the TG. Green positive immunofluorescence for 5-HT1B (a) and 5-HT1D (b) receptors throughout the Aδ-fiber, also at the node of Ranvier (monoclonal CASPR, red, arrow) No clear co-localization with CASPR was detected. Arrowheads point out immunopositive axons for both receptorsBack to article page