Very low concentrations (5 nM) of alpha-toxin from the venom of Naja naja atra produced a characteristic fade in muscle compound action potential and tetanus induced by repetitive nerve stimulation which was identical to the effects of curare. High concentrations of alpha-toxin and all concentrations of alpha-bungarotoxin reduced the response but produced very little fade in comparison to curare. These results suggest that alpha-toxins have more than one effect at the neuromuscular junction.
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Bradley et al. (1987) studied this question.
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