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Fig. 1. Effect of hypotonic shock in isolated opercular epithelia mounted in
symmetrical saline. (A) Example trace of time course of hypotonic shock on
Vt, a 1 h duration period in hypotonic conditions and
overshoot after restoration of isotonic conditions. (B) The size of the
overshoot is a function of the period of hypotonic exposure; short periods
yield no overshoot, longer periods yield larger overshoot in current,
indicative of regulatory volume decrease during long hypotonic exposure.