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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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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.

A stallion with a proven competition record is one criterion for being a suitable sire. A stallion with a proven competition record is one criterion for being a suitable sire.
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