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Did you know?

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

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There are 20 feet of blood vessels in each square inch of human skin.

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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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