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Vitamin A:Vitamin A is a colorless substance found only in animal foods. It is formed in the animal or human body from a yellow pigment, carotene, found in carrots, apricots, yams, all green vegetables, green pasture crops and seaweeds, the quantity roughly paralleling the intensity of the color. We get vitamin A itself from such animal foods as liver and fish-liver oils; egg yolks, butter, and cream supply both carotene and vitamin A.

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