Effect of GalA-MRP on the Bz-insensitive NaCl CT response. (A) Shows a representative trace of a CT response obtained while the rat tongue was stimulated with the rinse (R) alone and then with R + GalA-MRP at 0.5% and 1.0% maintained at 23 °C (Table 1). The arrows show the time period when the tongue was superfused with R or R + GalA-MRP. (B) Shows a representative trace of a CT response obtained while the rat tongue was first stimulated with R and then with N + Bz solutions containing GalA-MRP (0–1%) maintained at 23 °C (Table 1) using Stimulus Series 1 protocol (see Material and methods). The mean ± standard error of the mean values of the normalized phasic (C) and tonic (D) CT responses from 3 animals are plotted as a function of log[GalA-MRP] concentration. At 0.1%, 0.25%, 0.5%, 0.75%, and 1% GalA-MRP, the paired P values for the phasic response were 0.047, 0.005, 0.001, 0.825, and 0.52, respectively, and for the tonic response were 0.0001, 0.0001, 0.0001, 0.13, and 0.0011, respectively, with reference to 0 GalA-MRP.