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

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DIDS inhibits the pH_i increase caused by returning external Na⁺ to astrocytes bathed in 5% CO₂/17 mM HCO₃ ⁻. Between a and m, the cell was exposed to 5% CO₂/17 mM HCO₃ ⁻. We replaced external Na⁺ with Li⁺ three times (c–e, f–i, and kl ). 400 μM DIDS was present between points h and j.