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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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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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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.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Three bonds separate sequential α carbons in a polypeptide chain Three bonds separate sequential α carbons in a polypeptide chain
(PDB ID 1MBO) Orientation of the protein is similar in (PDB ID 1MBO) Orientation of the protein is similar in
Dimensions for gathering data Dimensions for gathering data
A helical array of and tubulin forms a microtubule A helical array of and tubulin forms a microtubule
DNA sequence variation in parts of the Drosophila Adh gene DNA sequence variation in parts of the Drosophila Adh gene
Telomerase synthesis of repeating telomeric sequence Telomerase synthesis of repeating telomeric sequence
Video: Calvin cycle (The light-independent reactions )

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