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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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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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Asthma cases in Americans are about 75% higher today than they were in 1980.

In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many
This photograph of a Union soldier just freed from Andersonville prison, stunned and enraged norther This photograph of a Union soldier just freed from Andersonville prison, stunned and enraged norther
Thought Suppression (1 of 4) Thought Suppression (1 of 4)
Thought Suppression (2 of 4) Thought Suppression (2 of 4)
Thought Suppression (4 of 4) Thought Suppression (4 of 4)
Victims of police-reported intimate partner violence 2017 to 2018 Victims of police-reported intimate partner violence 2017 to 2018
Video: Inflammation

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