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<p>Shows pictures of two white rats. One rat had no vitamin A. It has infected eyes, rough fur, and a sick appearance The second rat had plenty of vitamin A. It has bright eyes, shiny fur, and looks alert and vigorous. The picture also show what kind of food rich in vitamin A.
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<br>Subjects: Vitamin A in animal nutrition Posters; Nutrition Research Posters; Animal models in research Posters; Diet Posters; Rats as laboratory animals Posters</div>
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United States:Bureau of Human Nutrition and Home Economics</div>
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