Fig. 3.

The effects of inhalations of NaHS and sodium hydroxide (NaOH) on the afferent responses of CSLV fibers to the right atrial bolus injection of capsaicin (A) and to lung inflation (B) in 2 groups of rats. The NaOH was dissolved in the saline (NaHS vehicle) at pH 11.3 to mimic the pH effect of a NaHS solution. ^aSignificantly different from the value before inhalation in the same group (P < 0.05). *Significantly different from the value at the corresponding time period in the NaHS group (P < 0.05). Data in each group are means ± SE of 8 fibers recorded from 8 rats. See Fig. 2 for further explanation.