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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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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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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4? What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4?
What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4? What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4?
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Video: Renin/Angiotensin (water gain from urine & Na ion and water reabsorption)

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