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Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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More than 4.4billion prescriptions were dispensed within the United States in 2016.

The hierarchy of forces governing protein structure. The hierarchy of forces governing protein structure.
The hierarchy of biological classification's eight major taxonomic ranks. The hierarchy of biological classification's eight major taxonomic ranks.
Structural hierarchy in the molecular organization of cells Structural hierarchy in the molecular organization of cells
Four levels of protein hierarchy Four levels of protein hierarchy
Maslow’s hierarchy of needs. Maslow’s hierarchy of needs.
Maslow's hierarchy of needs Maslow's hierarchy of needs
Video: Griffith's experiments

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