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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A hexaisoprenoid (triterpenoid) hydrocarbon; intermediate in the biosynthesis of cholesterol and other sterols and triterpenes; found in shark oil and in some plants.
Farlex Partner Medical Dictionary © Farlex 2012
An unsaturated aliphatic hydrocarbon, C30H50, that is the biosynthetic acyclic precursor to tetracyclic steroids such as cholesterol. It is widely found in animals, plants, and fungi and is present in high concentrations in shark liver oil and human sebum.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
A natural nonaromatic hydrocarbon found in plants and animals; a precursor of steroids including cholesterol.
[L. squalus, shark]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012