Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The horizontal fraction bar was introduced by the Arabs.
The structure and function of the renal corpuscle.
The structure of the placenta
Pocket gophers and ecosystem structure (data from Huntly and Inouye 1988).