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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

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Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
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