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Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Hydrogen Bonds Can Form Between or Within Molecules Hydrogen Bonds Can Form Between or Within Molecules
CMS-1500 form showing linkage of CPT and diagnosis codes. CMS-1500 form showing linkage of CPT and diagnosis codes.
Common skin signs are often evidence of an illness or disorder. A macule is a discolored spot on the ... Common skin signs are often evidence of an illness or disorder. A macule is a discolored spot on the ...
Common skin signs are often evidence of an illness or disorder. A nodule is a larger papule; acne ... Common skin signs are often evidence of an illness or disorder. A nodule is a larger papule; acne ...
Albinos lack pigment in the skin, hair, and eyes. Albinos lack pigment in the skin, hair, and eyes.
The B-form DNA double helix The B-form DNA double helix
Video: Osmosis - water transport

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