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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f Joseph Moore and His Family (1839), by Erastus Salisbury Field, reflects the emerging middle-class f
Common Latin Abbreviation Common Latin Abbreviation
Most drugs exhibit first-order elimination, in which the rate of drug elimination is equivalent to ... Most drugs exhibit first-order elimination, in which the rate of drug elimination is equivalent to ...
Capacitors in parallel and an equivalent capacitor Capacitors in parallel and an equivalent capacitor
Equivalent Trig Expressions Equivalent Trig Expressions
Equivalent Trig Expressions Equivalent Trig Expressions
Video: Dissociative Disorders (Part 2)

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