SaxitoxinAmphibian ProteinsShellfish PoisoningMarine ToxinsAquatic OrganismsTetrodotoxinNeurilemmaBatrachotoxinsPoisonsCylindrospermopsisDinoflagellidaSodium ChannelsVeratridineShellfishMollusk VenomsSodiumOlfactory NerveIon ChannelsHarmful Algal BloomToxins, BiologicalBufonidaeFishes, PoisonousTetraodontiformesConotoxinsFresh WaterFishesVeratrineNeuromuscular Blocking AgentsSodium Channel BlockersAmidinotransferasesAphanizomenon