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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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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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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

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Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

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If you could remove all of your skin, it would weigh up to 5 pounds.

Sperm whale arching back in preparation to dive off Dominica Sperm whale arching back in preparation to dive off Dominica
stereocilia inside the ear stereocilia inside the ear
One version of a bump cap is a molded plastic insert worn inside a regular cloth cap. One version of a bump cap is a molded plastic insert worn inside a regular cloth cap.
Sperm Sperm
Meiosis is used to make sperm and egg cells. A shows a simplified version and B shows a detailed ver Meiosis is used to make sperm and egg cells. A shows a simplified version and B shows a detailed ver
If nondisjunction (the improper separation of chromosomes) occurs during meiosis, the eggs or sperm If nondisjunction (the improper separation of chromosomes) occurs during meiosis, the eggs or sperm
Video: Red Blood Cells - Erythropoietin (EPO)

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