]>

Figure 6: Intracellular sodium concentration in OMCD principal cells. Effect of amiloride. Gray columns: control, light gray columns: ${10}^{-5}$M amiloride. (1) control normal PBS $[{\text{Na}}^{+}{]}_{\text{i}}$ 280 mM. (2) steady state in hypotonic 0.5 PBS $[{\text{Na}}^{+}{]}_{\text{i}}$ 140 mM. (*): $P<.05$ difference with intact control.