There are 60,000 miles of blood vessels in every adult human.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Information flows from the nucleus to the cytoplasm and back.
Single atoms form the nodes of an elementary quantum network
Compartments of the Global Ecosystem
Global Stratification: Income of the World's Nations
Latin America in the Global Economy
The five skills of the element Collection of Information