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By definition, when a medication is administered intravenously, its bioavailability is 100%.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.