vitamin A

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A family of nutrients needed by the body for vision, bone growth, reproduction, cell division, and cell differentiation. Vitamin A also helps the immune system protect the body against many types of infections. Foods with vitamin A include animal foods, such as liver, whole eggs and milk, and plant foods such as carrots, cantaloupes, sweet potatoes, and spinach. Vitamin A is being studied in the prevention and treatment of some types of cancer.