GTTR uptake in sensory neurons. In the DRG or TG, GTTR fluorescence is present in neuronal cell bodies 24 h post-injection (A, D), peaking at 3 days (B, E). At 7 days post-injection, GTTR fluorescence is still retained in neuronal soma (C, G). (F) When infra-orbital dendritic processes of the TG are cut and ligated, diminished GTTR fluorescence occurred in TG neuronal soma compared to sham-operated animals (E). Scale bar applies to all images.