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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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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.