|MadSci Network: Biochemistry|
toxin - any substance that can cause harm poison - a toxin that causes its effect through ingestion or absorbtion venom - a toxin that causes its effect through administration via a specialised delivery system A good example is tetrodotoxin, a toxin that can be a poison or a venom. It is a poison in pufferfish, causing its effect when tissues from this fish are eaten. It is a venom in the blue-ringed octopus, being stored in salviary glands and delivered into a wound caused by the beak of the octopus. Thus, snakes are venomous since the toxin is delivered via specialised apparatus while poison arrow frogs are poisonous since the toxin is absorbed. Cheers, Bryan International Venom & Toxin Database http://www.uq.edu.au/~ddbfry/index.html
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