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Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.