TABLE 1

Compositions of intracellular and extracellular electrophysiological saline solutions containing standard and low chloride concentrations

The concentration of each reagent is listed for the four electrophysiological saline solutions used in this study, together with the final concentration of acid or base used to adjust intracellular solutions to a pH of 7.2 and extracellular solutions to a pH of 7.4. Also shown are the final concentrations of monovalent anions and cations for each solution. Intracellular and extracellular solutions were adjusted to a final osmolarity of 315 and 325 mOsM, respectively, with sucrose or deionized water as necessary.