Figure 5. Effect of ionomycin and zoniporide on TRC pH_i.

A lingual epithelial preparation was initially perfused on both sides with control Ringer solution (RC; Table 1). Temporal changes in TRC pH_i were monitored following short basolateral NH₄Cl pulses (RNH₄Cl; Table 1) in the presence 10μm zoniporide (b–c–d–e–f); 10μm zoniporide + 15μm ionomycin (g–h–i); and 15μm ionomycin (j–k–i). The pH_i values are presented as mean±s.e.m. of number of ROIs within the taste bud, n.