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The effect of L-type Ca2+ channel inhibition on spontaneous phasic activity in the pig bladder. (A) Concentration response curve for nifedipine. Shown is a representative tracing. (B) Mean reductions in spontaneous phasic activity by 300 nM nifedipine expressed as a percentage change from baseline response. Data were analysed for changes in overall contractions (AUC), frequency, duration and amplitude. *Represents significant differences from baseline responses (P<0.05; n=4).
