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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.