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Fig. 1. Whole cell currents of ciliated pedal epithelial cells for Tritonia
diomedea. (A) Ionic currents resulting from voltage clamp depolarizing
steps in a representative cell show large, slowly activating and voltage
dependent currents. The slow I-V (B) reveals a strong voltage
dependence. The initial current size is not dependent on the inclusion of 2
mmol l-1 ATP and 100 µmol l-1 cAMP in the recording
pipette internal solution (open triangles, with ATP and cAMP, N=50;
filled circles, without, N=76).