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. 2013 Dec 27;8(12):e83460. doi: 10.1371/journal.pone.0083460

Figure 6. Innervation to the tongue surface remained in TrkB−/− mice.

Figure 6

Half tongues following DiI-labeling of the geniculate ganglion in wild-type (A, D, F), Bdnf−/−/Ntf4−/− (B), and TrkB−/− mice (C, E, G) at E14.5, E15.5, and E18.5. A high magnification view of the tongue at E15.5 (H and I, which correspond to the boxed areas in D and E, respectively) and E18.5 (J, which corresponds to the boxed area in G) illustrates that some DiI-labeled innervation is visible to the tongue surface at E15.5 in TrkB −/− mice. (K) A sagittal section of the innervation to the tip of the tongue in E18.5 TrkB−/− mice also illustrates innervation reaching the tongue surface. The scale bar in E = 200 µm and applies to A–E. The scale bar in G = 500 µm and applies to F and G. The scale bar in I = 200 µm and applies to H and I. The scale bar in J = 300 µm. The scale bar in K = 500 µm.