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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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