Blood is approximately twice as thick as water because of the cells and other components found in it.
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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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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.