The human body produces and destroys 15 million blood cells every second.
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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.