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Related to batrachotoxin: saxitoxin
A neurotoxin from the Colombian arrow poison frogs (Phyllobates spp.). It is nontoxic when ingested. If it is injected or if ulcers are present, it will cause an irreversible increase in permeability of sodium ions in nerve membrane, producing paralysis.
[G. batrachos, frog, + toxin]
A steroid alkaloid derived from skin secretions of South American poison-dart frogs of the genus Phyllobates. It is one of the most potent venoms known.