Table 2.

Reversal potential and stoichiometry of pNBC1 in pancreatic exocrine cells

[Na+]AP/[Na+]BL	Vrev (mV)	n	N
10/20	−18.25 ± 2	2.00 ± 0.2	4
10/50	−37.56 ± 3	2.13 ± 0.2	6
10/80	−50.62 ± 4	2.08 ± 0.2	4
20/10	20.31 ± 2	1.90 ± 0.2	4
50/10	40.54 ± 3	2.05 ± 0.2	4
80/10	58.52 ± 5	1.93 ± 0.2	4

AP, apical; BL, basolateral; n, HCO₃⁻:Na⁺ stoichiometry; N, number of filter inserts.