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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Telomere length is related to the amount of time adults spend in leisure time activity. Source: Ada Telomere length is related to the amount of time adults spend in leisure time activity. Source: Ada
Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap
Why did these young volunteers of the First Virginia Militia join the Confederate army in 1861? “It Why did these young volunteers of the First Virginia Militia join the Confederate army in 1861? “It
President-elect Barack Obama, his daughters, and wife, Michelle, celebrate his victory in November 2 President-elect Barack Obama, his daughters, and wife, Michelle, celebrate his victory in November 2
Men and women work the same number of hours a week, but men spend more time on paid work, and women ... Men and women work the same number of hours a week, but men spend more time on paid work, and women ...
Olowe Of Ise Veranda Posts (LEFT To RIGHT): Royal Wife With Twin Daughters Olowe Of Ise Veranda Posts (LEFT To RIGHT): Royal Wife With Twin Daughters
Video: Chronology of leptin research (A history of leptin research)

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