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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

The age structure of human populations in West Africa and Western Europe, as of 2000. The age structure of human populations in West Africa and Western Europe, as of 2000.
The functional structure of the peripheral nervous system. (A) Afferent or sensory neurons carry sen The functional structure of the peripheral nervous system. (A) Afferent or sensory neurons carry sen
Renzo Piano Building Workshop, Aerial view of Kansai International Airport, Osaka, Japan. Renzo Piano Building Workshop, Aerial view of Kansai International Airport, Osaka, Japan.
The chemical structure of mescaline, derived from the peyote cactus. The chemical structure of mescaline, derived from the peyote cactus.
One unit of clathrate structure surrounding a hydrophobic molecule (yellow) One unit of clathrate structure surrounding a hydrophobic molecule (yellow)
The structure of the potassium channel pore The structure of the potassium channel pore
Video: What is Cholesterols? Introduction to Lipoproteins

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