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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Illicit drug use costs the United States approximately $181 billion every year.
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In 1864, the first barbiturate (barbituric acid) was synthesized.