Effect of gymnodinium breve toxin(s) on frog skin and the giant axon of the squid.

Abstract

Abstract A partially purified toxin from the dinoflagellate Gymnodinium breve was found to elicit a transient increase in the active transport in frog skin, and a spontaneous train of action potentials in the giant axon of the squid. Both effects were concentration dependent, reversible, and suggest the existence of unique sites of action of this toxin.