Toxin: Difference between revisions
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Biotoxins vary greatly in purpose and mechanism, and can be highly complex (the [[venom]] of the [[cone snail]] contains dozens of small [[protein]]s, each targeting a specific nerve channel or receptor), or relatively small protein. |
Biotoxins vary greatly in purpose and mechanism, and can be highly complex (the [[venom]] of the [[cone snail]] contains dozens of small [[protein]]s, each targeting a specific nerve channel or receptor), or relatively small protein. |
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==Use== |
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== Suck My Dick Bitches == |
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Biotoxins in nature have two primary functions: |
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*Predation ([[spider]], [[snake]], [[scorpion]], [[jellyfish]], [[wasp]]) |
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*Defense ([[bee]], [[poison dart frog]], [[deadly nightshade]], [[Honey bee|honeybee]], [[wasp]]) |
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Some of the more well known types of biotoxins include: |
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*'''[[Hemotoxin]]s''' target and destroy red blood cells, and are transmitted through the bloodstream. Organisms that possess hemotoxins include: |
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**[[Pit_viper|Pit Vipers]], such as [[rattlesnake]]s. |
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*'''[[Necrosis|Necrotoxins]]''' cause necrosis (i.e., death) in the cells they encounter and destroy all types of [[biological tissue|tissue]]. Necrotoxins spread through the bloodstream, but infect all tissues. In humans, [[skin]] and [[muscle]] tissues are most sensitive to necrotoxins. Organisms that possess necrotoxins include: |
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**The [[Brown recluse spider|brown recluse]] or "fiddle back" spider. |
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**[[Necrotizing fasciitis]] (the "flesh eating" [[bacteria]]) |
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*'''[[Neurotoxin]]s''' primarily affect the nervous systems of animals. Organisms that possess neurotoxins include: |
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**The [[Black widow spider|Black Widow]] and other [[widow spider]]s. |
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**Most [[scorpion]]s. |
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**The [[box jellyfish]]. |
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**[[Elapidae|Elapid]] snakes. |
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**The [[Cone snail|Cone Snail]]. |
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Plant Toxins |
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Ricin is found in the castor bean plant. |
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==Non-technical usage== |
==Non-technical usage== |
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Revision as of 13:19, 31 May 2007
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A toxin (Gk. Template:Polytonic toxikon "(poison) for use on arrows,") is a poisonous substance produced by living cells or organisms. Toxins are nearly always proteins that are capable of causing disease on contact or absorption with body tissues by interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their severity, ranging from usually minor and acute (as in a bee sting) to almost immediately deadly (as in botulinum toxin).
Biotoxins vary greatly in purpose and mechanism, and can be highly complex (the venom of the cone snail contains dozens of small proteins, each targeting a specific nerve channel or receptor), or relatively small protein.
Bold text
Suck My Dick Bitches
sae.lkjryvghcsdihenrfmypureh cdwy
Non-technical usage
When used non-technically, the term "toxin" is often applied to any toxic substances. Toxic substances not of biological origin are more properly termed poisons. Many non-technical and lifestyle journalists also follow this usage to refer to toxic substances in general, though some specialist journalists at publishers such as BBC and The Guardian maintain the distinction that toxins are only those produced by living organisms.
In the context of complementary medicine the term is often used as a broader category of any harmful substance claimed to cause ill health, though mainstream scientists often argue that the nature of such substances is unproven.
See also
- Apitoxin
- Hemotoxin
- Mycotoxin
- Neurotoxin
- Phototoxin
- Toxicophore
- Toxoid
- Venom
- List of fictional toxins