distal to its junction with the superior cervical ganglion. Nerve potentials were recorded monophasically under oil with a bipolar platinum electrode after capacity-coupled preamplification (low and high half-amplitude responses at 1 and 500 Hz). Nerve activity was displayed on the polygraph and quantitated using a Grass 7P10B cumulative integrator. Compound 13e was dissolved in 0.1 M citric acid at a concentration of 1 mg/mL. Statistical Analysis. Statistical analysis for most experiments was performed using the Student's t test for unpaired comparisons.The values obtained at each time period in the drug-treated groups were compared to the corresponding values in the vehicle group.The 0.05 level of probability was used to indicate statistical significance.
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