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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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Cyanide works by making the human body unable to use oxygen.
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The longest a person has survived after a heart transplant is 24 years.