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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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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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There are more sensory neurons in the tongue than in any other part of the body.

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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Summation of Heart Sounds, Normal Physiological Split of S1 Summation of Heart Sounds, Normal Physiological Split of S1
Summation of Heart Sounds, Wide Split of S1 Summation of Heart Sounds, Wide Split of S1
Summation of Heart Sounds, Soft S1 Summation of Heart Sounds, Soft S1
Summation of Heart Sounds, Summation Gallop Summation of Heart Sounds, Summation Gallop
The nurse assesses the patient's ability to use the walker correctly The nurse assesses the patient's ability to use the walker correctly
Common Root Words and Combining Forms Common Root Words and Combining Forms
Video: What Are Carbohydrates? Importance of Carbs & High Carb Food

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