#neurotoxin__neurolysin  any toxin that affects neural tissues
  supertype:  #toxin  a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
  subtype:  #saxitoxin  a powerful neurotoxin produced by certain dinoflagellates found in red tides; it can accumulate in mollusks that feed on the dinoflagellates and cause food poisoning to humans
  subtype:  #kokoi_venom__kokoivenom  a potent neurotoxin found in a particular frog

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