Table 5.

Steady-state solution at x =1.0 mm, v₀ =1 μl/min

	Model Solution	Experimental Source
Secondary saliva
[Na+]l	29.2 mM	4.9–30 mM (Refs. 6, 34)
[K+]l	61.3 mM	46.3 mEq/l (Ref. 34)
[Cl−]l	42.5 mM	37.8 mEq/l (Ref. 34)
[HCO3−]l	47.9 mM
Cytosolic ion concentrations
[Na+]i	14.0 mM	13.6 ± 0.4 mM (Ref. 58)
[K+]i	123.5 mM
[Cl−]i	19.7 mM	23 ± 1.9 mM (Ref. 26)
[HCO3−]i	20.7 mM
Potential difference at the end of duct
VA	−15.2 mV
VB	−57.1 mV

See text for definitions.