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Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Skeletal muscle structure. Skeletal muscle structure.
Regulation of muscle contraction by tropomyosin and troponin Regulation of muscle contraction by tropomyosin and troponin
cat muscle anatomy lab11 cat muscle anatomy lab11
cat muscle anatomy lab16 cat muscle anatomy lab16
Injecting the ventrogluteal muscle. Injecting the ventrogluteal muscle.
A cross section of muscle showing the molecular organization within the muscle fiber. In normal musc A cross section of muscle showing the molecular organization within the muscle fiber. In normal musc
Video: Bone tissue types - compact and spongy

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