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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
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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 bacteria in your mouth than there are people in the world.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.