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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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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.

Gustave Caillebotte, Place de l'Europe on a Rainy Day. Gustave Caillebotte, Place de l'Europe on a Rainy Day.
Apply deep circular effleurage to the buttocks muscles as a warming technique. Place one hand on top ... Apply deep circular effleurage to the buttocks muscles as a warming technique. Place one hand on top ...
Passive shoulder roll. Place one hand on the anterior and the other on the posterior shoulder. ... Passive shoulder roll. Place one hand on the anterior and the other on the posterior shoulder. ...
Traction the neck by placing the head, in neutral position facing upward, in one hand. Place the ... Traction the neck by placing the head, in neutral position facing upward, in one hand. Place the ...
The NIOSH Pocket Guide entry for gasoline. Useful information includes health effects and chemical ... The NIOSH Pocket Guide entry for gasoline. Useful information includes health effects and chemical ...
The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ... The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ...
Video: Monohybrid crosses

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