Vitamin a Deficiency
Vitamin A deficiency exists when the chronic failure to eat sufficient amounts of vitamin A or beta-carotene results in levels of blood-serum vitamin A that are below a defined ra...
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Vitamin A
Since its discovery in the early part of this century, we have learned a great deal about vitamin A. Among other things, we now know that this once-mysterious compound is essential for norma...
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Retinol
Overview
Retinol (RET-uh-nol) is the scientific name for vitamin A, a vitamin found only in animals. It occurs as a yellowish to orange powder with a slight brownish cast and is a relatively s...
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Vitamin a Deficiency
Vitamin A
Retinol