Electrical stimulation of the visceral ganglion of the mussel Mytilus edulis caused cilia on the lateral epithelium of the gill to beat faster. This effect was blocked by cocaine, physostigmine, hyoscyamine, and acetylcholine but not by tubocurarine. These agents did not block the cilioexcitatory effect of serotonin.
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Aiello et al. (1964) studied this question.
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