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There are approximately 3 million unintended pregnancies in the United States each year.
There are more nerve cells in one human brain than there are stars in the Milky Way.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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