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. 1997 Oct 1;110(4):467–483. doi: 10.1085/jgp.110.4.467

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Removing external Na⁺ elicits a simultaneous depolarization and pH_i decrease in a single hippocampal astrocyte. The astrocyte was exposed to 5% CO₂/17 mM HCO₃ ⁻ between points a and g. During the indicated periods, we replaced external Na⁺ with Li⁺ (cd, ef, and ij).