Normalized CT whole nerve responses to a range of NaCl concentrations (A), to a range of NaCl concentrations mixed with amiloride (B), and averaged across concentrations (C) in control, NaD2, and 10-day Na+-deprived (NaD10) rats. Independent of concentration, mean CT responses to NaCl alone in control rats, relative to 30 mM QHCl response, were significantly greater than all other conditions (*P < 0.01).