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![Vitamin A - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_36.jpeg)
Vitamin A - Wikipedia, the free encyclopedia
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日期:2024-08-19
Vitamin A is a group of unsaturated nutritional organic compounds, that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids, among which beta-carotene is the most important. Vitamin A has multi ......看更多