e individual TRCs was perfused with 0 Na^+^ Ringer\'s solution containing 000 mM NMDG-Cl + 0 μM Bz + 00 μM zoniporide (pH 0.0). Temporal changes in F~000~ of Na-green--loaded TRCs were monitored while the taste bud fragment was perfused with Ringer\'s solution containing 000 mM NaCl + 0 μM Bz + 00 μM zoniporide + 00% ethanol 