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Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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

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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Thymus gland. (A) Appearance and position; (B) with anatomic structures. Thymus gland. (A) Appearance and position; (B) with anatomic structures.
Melatonin and sleep Melatonin and sleep
Anatomy of the adrenal gland. Anatomy of the adrenal gland.
Adrenal gland. Adrenal gland.
Melatonin and Sleep Melatonin and Sleep
Polytene chromosomes derived from larval salivary gland cells of Drosophila Polytene chromosomes derived from larval salivary gland cells of Drosophila
Video: Chemical Messengers Animation

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