
Squalene is a natural 30-carbon organic compound originally obtained for commercial purposes primarily from shark liver oil (hence its name), although plant sources (primarily vegetable oils) are now used as well, including amaranth seed, rice bran, wheat germ, and olives. It is also found in high concentrations in the stomach oil of birds in the ...
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http://en.wikipedia.org/wiki/Squalene

(from the article `carbonium ion`) ...hydrocarbons. One example of the significance of carbonium ions in bio-organic processes may be found in the biological synthesis of the important ... In plants and animals, steroids appear to be biosynthesized by similar reactions, beginning with acetic acid, assisted by a type of enzyme. The ... ...
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http://www.britannica.com/eb/a-z/s/146

<chemical> Chemical name: 2,6,10,14,18,22-Tetracosahexaene, 2,6,10,15,19,23-hexamethyl-, (all-E)- ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973

(skwa´lēn) an unsaturated terpene that is an intermediate in cholesterol synthesis and occurs normally at low levels in blood plasma and at elevated levels in viral influenza; used as a vehicle for pharmaceuticals.
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http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: skwā′lēn Definitions: 1. A hexaisoprenoid (triterpenoid) hydrocarbon; intermediate in the biosynthesis of cholesterol and other sterols and triterpenes; found in shark oil and in some plants.
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http://www.medilexicon.com/medicaldictionary.php?t=84180

Contained in the oil found in shark’s liver.
Found on
http://www.world-of-sharks.com/shark-glossary.html
No exact match found.