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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The horizontal fraction bar was introduced by the Arabs.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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There are more sensory neurons in the tongue than in any other part of the body.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.