Table 4.

Solutions used in Fig. 4

Component	ND96/Li+, mM	33 mM HCO3−/Li+	33 mM HCO3−
Na+	0	0	96
Li+	96	96	0
K+	2	2	2
Mg2+	1	1	1
Ca2+	1.8	1.8	1.8
Total cations, meq	103.6	103.6	103.6
Cl−	101.1	68.1	68.1
HCO3−	0	33	33
HEPES−	2.5	2.5	2.5
Total anions, meq	103.6	103.6	103.6
HEPES (neutral)	2.5	2.5	2.5
pH	7.5	7.5	7.5

The 33-mM HCO₃⁻ solutions were equilibrated with 5% CO₂/95% O₂. Osmolarity of all solutions was ∼200 mosM.