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Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Everyone has one nostril that is larger than the other.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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Video: Primary and secondary response to infection

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