SEM of crystals of cholesterol
Bildnummer 11520653
| Scanning electron micrograph (SEM) of crystals of pure anhydrous cholesterol precipitated from ethanol. Cholesterol is a sterol,a waxy,fat-like material synthesised by all animal cells. It is an essential constituent of the cell membrane,a precursor to the formation of sex hormones and the source of bile salts. A third of body cholesterol is produced in the liver. Its excretion,directly or as bile salts,is the sole responsiblity of the liver. Body cholesterol is added to by dietary cholesterol,mainly from meat and dairy products. High levels are associated with atheroma (furring of the arteries) & coronary heart disease,but the relationship is unclear. Mag: X 43 at 35mm size. Original is A600/220 | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library |
| Bildgröße: | 3666 px × 2698 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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