| vitamin A |
Vitamin A (retinol, carotene) is required for the maintenance of epithelial cells and for retinyl function. Vitamin A helps in the formation and maintenance of healthy teeth, skeletal and soft tissue, mucous membranes, and skin. It promotes good vision, especially in dim light. It may also be required for reproduction and lactation. Beta carotene, which has antioxidant properties, is a precursor to vitamin A.
출처: www.always-youthful.com/definitions/v.shtml
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| vitamin A |
Butter contains about 3,000 IU of vitamin A per 100 grams, or 153 IU per serving (1 pat/ 5 grams).
출처: webexhibits.org/butter/glossary-sz.html
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| vitamin A |
This antioxidant vitamin energizes cells and is a potent free radical scavenger. It is vital for maintaining a youthful, supple, smooth complexion and in helping to slow the appearance of aging.
출처: www.celltechpersonalcare.com/glossary.jsp
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| vitamin A |
(Retinol): Vitamin A is a fat-soluble vitamin with multiple functions in the body. It helps cells differentiate, an essential part of cell reproduction. Cells that are not fully differentiated are more likely to undergo pre-cancerous changes. It is a central component for healthy vision; vitamin A nourishes cells in various structures of the eye and is required for the transduction of light into nerve signals in the retina. ...
출처: www.nutritiondata.com/glossary.html
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| vitamin A |
The need for vitamin A in the human vision system was identified almost 100 years ago. The biochemistry was clearly identified over fifty years ago, making vitamin A the first vitamin carefully examined; hence the reason why it is called A. Another related micro-nutrient, lutein, was discovered only months ago to be involved in the biochemistry of human vision.
출처: www.eyecaretyler.com/knowmore.htm
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