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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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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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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Hannah Höch, Study for "Cut with the Kitchen Knife Dada through the Last Weimar Beer Belly ...
Sperry’s classic study of eye rotation and regeneration.
Sensitivity study for facial difference
Baltimore Longitudinal Study of Aging
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