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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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Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

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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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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

The process of mitosis in an animal cell. The process of mitosis in an animal cell.
Placenta previa. The condition is caused by the development of the placenta over the cervical canal, Placenta previa. The condition is caused by the development of the placenta over the cervical canal,
A Summary of the Star Formation Process A Summary of the Star Formation Process
The process of phagocytosis: a phagocyte engulfing bacteria or other foreign material. The process of phagocytosis: a phagocyte engulfing bacteria or other foreign material.
In 2008, Barack Obama was elected president of the United States, the first minority to achieve this ... In 2008, Barack Obama was elected president of the United States, the first minority to achieve this ...
(b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ... (b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ...
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

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