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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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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

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There are more sensory neurons in the tongue than in any other part of the body.

Second-degree burn of the hand. Second-degree burn of the hand.
Early in the twentieth century, when malnutrition was common, companies such as this one advertised Early in the twentieth century, when malnutrition was common, companies such as this one advertised
What degree of certainty? What degree of certainty?
a) Preload is the degree to which the ventricles are filled with blood and the myocardial fibers are ... a) Preload is the degree to which the ventricles are filled with blood and the myocardial fibers are ...
Third-degree burn. Third-degree burn.
How to solve first-degree equations (Part 1) How to solve first-degree equations (Part 1)
Video: Bond types - Atomic structure and basis of bonds

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