| FP | Fungiform papilla |
| CV | Circumvallate papilla |
| TB | Taste bud |
| CT | Chorda tympani |
| GL | Glossopharyngeal nerve |
| LN | Lingual nerve |
| Shh | Sonic hedgehog |
| Hh | Hedgehog |
| GG | Geniculate ganglion |
| TG | Trigeminal ganglion |
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