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Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

A hypothetical scenario illustrating the process of chemical selection A hypothetical scenario illustrating the process of chemical selection
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Turning over technique: Use tenting to assist the recipient turning to supine position. Anchor the ... Turning over technique: Use tenting to assist the recipient turning to supine position. Anchor the ...
The debranching process in glycogen catabolism The debranching process in glycogen catabolism
The overall process of splicing The overall process of splicing
Component of right internal ear Component of right internal ear
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

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