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Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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Video: Electrocardiogram Examination

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