#toxin  a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
  supertype:  poisonous_substance__poisonoussubstance__poison  any substance that causes injury or illness or death of a living organism
  subtype:  animal_toxin__zootoxin  a toxin resembling bacterial toxins in its antigenic properties that is found in the fluids of certain animals
     subtype:  venom  toxin secreted by animals (by certain snakes and poisonous insects (e.g., spiders and scorpions))
        subtype:  kokoi_venom__kokoivenom  a potent neurotoxin found in a particular frog
        subtype:  snake_venom__snakevenom  venom secreted by certain snakes
  subtype:  bacterial_toxin__bacterialtoxin  any endotoxin or exotoxin formed in or elaborated by bacterial cells
     subtype:  anatoxin__toxoid  a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin; "diphtheria toxoid"
     subtype:  botulin__botulinus_toxin__botulismotoxin  potent bacterial toxin produced by the bacterium Clostridium botulinum that causes botulism
  subtype:  cytotoxin  any substance that has a toxic effect on cells
  subtype:  endotoxin  a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die
  subtype:  exotoxin  a toxin that is secreted by microorganisms into the surrounding medium
  subtype:  neurotoxin__neurolysin  any toxin that affects neural tissues
     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
  subtype:  plant_toxin__planttoxin__phytotoxin  any substance produced by plants that is similar in its properties to extracellular bacterial toxin
     subtype:  nicotine  an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide
     subtype:  strychnine  an alkaloid plant toxin extracted chiefly from nux vomica; formerly used as a stimulant
     subtype:  brucine  a bitter alkaloid poison resembling strychnine and extracted from nux vomica
     subtype:  hemlock.plant_toxin  poisonous drug derived from an Eurasian plant of the genus Conium; "Socrates refused to flee and died by drinking hemlock"
     subtype:  tubocurarine__curare  a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles; used by South American indians as an arrow poison; "curare acts by blocking cholinergic transmission at the myoneural junction"

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