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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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The FDA recognizes 118 routes of administration.

Selected Local Anesthetics Selected Local Anesthetics
Local Anesthetic Agents Local Anesthetic Agents
Regeneration phase of the Calvin cycle Regeneration phase of the Calvin cycle
Reactions 6–10: The Energy Generation Phase Reactions 6–10: The Energy Generation Phase
Mitotic Phase: Metaphase Mitotic Phase: Metaphase
Typical bacterial population growth curve showing the initial lag phase Typical bacterial population growth curve showing the initial lag phase
Video: Membrane transport proteins - pores, gated channels and pumps

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