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. Author manuscript; available in PMC: 2018 Dec 15.
Published in final edited form as: J Comp Neurol. 2017 Sep 15;525(18):3935–3950. doi: 10.1002/cne.24312

FIGURE 8.

FIGURE 8

Whole tongue from an embryonic day 14.5 Phox2b-Cre:tdTomato mouse. Without any additional labeling, fiber bundles could be seen entering the base of the tongue and branching near the surface (a). Fibers could be seen projecting to specific locations on the tongue surface where fungiform papillae were located (arrows) (b). tdTomato-positive innervation was also seen innervating the circumvallate papilla (arrow) in the back of the same tongue (c) and innervation has a similar pattern as seen in fixed DiI-labeled tissue (d). Scale bar: (a) =200 μm, (b) =250 μm (applies to c and d)