The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
Furchgott's discovery that endothelial cells produce a vasodilating substance.
Dividing bacterial cells
Red Blood Cells
Dramatic growth of algae in water treated with phosphate