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There are approximately 3 million unintended pregnancies in the United States each year.

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

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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There are more bacteria in your mouth than there are people in the world.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Dinoflagellates of the supergroup Alveolata and their characteristic alveoli. Dinoflagellates of the supergroup Alveolata and their characteristic alveoli.
An adult male killer whale with its characteristic tall dorsal fin swims in the waters near Tysfjord An adult male killer whale with its characteristic tall dorsal fin swims in the waters near Tysfjord
Young boy with characteristic nasal crease from the repeated action of the “nasal salute” caused ... Young boy with characteristic nasal crease from the repeated action of the “nasal salute” caused ...
Conjunctivitis, with the characteristic “pinkeye” appearance. A yellow crusty exudate is also common Conjunctivitis, with the characteristic “pinkeye” appearance. A yellow crusty exudate is also common
Assessment of characteristic odors Assessment of characteristic odors
Chromatin states, gene content, and characteristic histone modifications Chromatin states, gene content, and characteristic histone modifications
Video: Properties of macromolecules (Explained with No Audio)

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