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Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Tonsils, lymph nodes, thymus, spleen, and lymphatic vessels with an expanded view of a lymph node. Tonsils, lymph nodes, thymus, spleen, and lymphatic vessels with an expanded view of a lymph node.
The major skeletal muscles—anterior superficial view. The major skeletal muscles—anterior superficial view.
microscope view of an onion root tip microscope view of an onion root tip
An offset screwdriver is used to install or remove fasteners that do not have enough space above to ... An offset screwdriver is used to install or remove fasteners that do not have enough space above to ...
A cutaway view of a typical two-stage turbine electric fuel pump. A cutaway view of a typical two-stage turbine electric fuel pump.
Anterosuperior view of false pelvis (pink) Anterosuperior view of false pelvis (pink)
Video: Dissociative Disorders (Part 2)

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