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.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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Your heart beats over 36 million times a year.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
sodium
Renal regulation of sodium and potassium balance
A typical bank statement.
Membrane potential of a cell freely permeable to sodium only.
Sodium’s chief role is regulation of fluid balance
How humans maintain homeostasis with respect to water and ions