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Fig. 3. Current-voltage (I-V) relationships for inward currents
in the wild-type and cca-1 pharynxes. (A) Wild type. (B)
cca-1.. Voltage protocols for the total current and current in the
presence of 10 µmol l-1 nifedipine were the same as in
Fig. 2A: depolarizing pulses
were applied in 10 mV increments starting from the holding potential of -80
mV. HVA currents were measured with the same voltage protocol as in
Fig. 2B: LVA current was
inactivated with the prepulse to -40 mV. For nifedipine experiments, averaged
current values at 50-60 ms of the pulse were used (after the LVA current has
inactivated); otherwise, peak amplitudes were used for I-V
curves.
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