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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Excessive alcohol use costs the country approximately $235 billion every year.
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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.
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.