The effect of pumiliotoxin-B on the excitability of bullfrog sympathetic neurons.


The effects of the alkaloid pumiliotoxin-B were investigated on neurons from bullfrog paravertebral ganglia using current-clamp techniques. Pumiliotoxin-B (2 microM) induced repetitive action potential discharge or bursting pacemaker activity in response to a single stimulus. The toxin had no significant effect on the mean resting potential or action… (More)


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