The cells in the heart need a constant supply of nutrients / oxygen and to get rid of their waste products ans that why it needs its own special circulatory system.
In a lot of cases, many people are unaware that they have HIV/AIDS, therefore it doesn't get reported and they end up spreading it to those they share beverages with or have sexual interactions with.
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Well learning is the best thing to do because it keeps your brain stimulated longer and it is never a bad idea to learn something new. Learning can enhance your life when you go to college because the stuff you learn in college is stuff you will have to use in your future job that will be the majority of what you do.
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Fever is an elevation of body temperature above the normal variation, which is induced by cytokine activation. Fever is often due to infection but can be associated with malignancy, inflammatory disease or other causes. In contrast, hyperthermia is an elevation in core body temperature due to thermoregulation failure.
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