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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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