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www.vivo.colostate.edu/hbooks/pathphys/endocrine/basics...
www.vivo.colostate.edu/hbooks/pathphys/endocrine/basics/steroidogenesis.html
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Oct 20, 2001 ... The basic cyclopentanoperhydrophenanthrene ring structure and carbon numbering system of all steroid hormones is depicted to the right, ...
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www.people.vcu.edu/~urdesai/intro.htm
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Oct 10, 2000 ... Cyclopentanoperhydrophenanthrene skeleton. Natural steroids have two methyls . Rings are labeled A, B, C and D. Numbering. Numbering of ...
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www.newworldencyclopedia.org/entry/Steroid
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A steroid is a lipid characterized by a carbon skeleton with four fused rings known as a cyclopentanoperhydrophenanthrene ring system. There are three fused ...
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www.encyclo.co.uk/define/Steroid
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steroid. A group name for lipids that contain a hydrogenated cyclopentanoperhydrophenanthrene ring system. Some of the substances included in this group are ...
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www.cyberlipid.org/sterols/ster0003.htm
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Its fundamental carbon structure is a cyclopentanoperhydrophenanthrene ring ( also called sterane). It was the first isolated sterol around 1758 by F.P. Poulletier ...
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edrv.endojournals.org/content/16/2/200.abstract
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... indicating that one of the rings of the cyclopentanoperhydrophenanthrene ring structure (the 9–10 carbon-carbon bond of ring B) was broken (see Section II).
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www.ispub.com/journal/the-internet-journal-of-toxicolog...
www.ispub.com/journal/the-internet-journal-of-toxicology/volume-3-number-2/high-cholesterol-levels-and-chronic-exposure-to-toxigenic-molds-in-damp-buildings-a-high-risk-for-cardiovascular-diseases-and-stroke.html
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Cholesterol belongs to a large group of biological molecules called steroids that have a similar four-ring structure, a cyclopentanoperhydrophenanthrene ring.
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www.e-steroid.com/steroid-articles/steroids.html
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Their chemical structure consists of a steroid nucleus which forms a hydrogenated cyclopentanoperhydrophenanthrene ring system having seventeen carbon ...
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www.ajcn.org/content/67/6/1108.full.pdf
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same root cyclopentanoperhydrophenanthrene ring structure. Technically, vitamin D is a secosteroid. Secosteroids are those steroids in which one of the rings of ...
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www.clearleadinc.com/site/steroids.html
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... cyclopentanoperhydrophenanthrene ring system (seventeen carbon atoms arranged in four rings). Many hormones, body constituents and drugs are steroids.
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