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Molecular graphic of vitamin A (retinol)

Molecular graphic of vitamin A (retinol)

A614/0020

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25.7 MB (804.1 KB compressed)

3543 x 2537 pixels

30.0 x 21.6 cm ⏐ 11.8 x 8.5 in (300dpi)

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Credit

LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY

Caption

Vitamin A. Molecular model of vitamin A, also called retinol (formula: C20H30O). The atoms are spherical and colour-coded: carbon (blue), oxygen (red) and hydrogen (white). Vitamin A is essential for normal growth, for bone and teeth formation, night vision and for protecting against infection. It is found in animal foods such as liver, fish- liver oil, eggs and dairy products. Carotene, from sources such as green vegetables and fruits, is converted into vitamin A in the liver. Deficiency leads to night-blindness, dry skin and eyes, and reduced resistance to infection. Prolonged excess intake can cause hypervitaminosis A, leading to nausea, hair loss and liver damage.

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