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Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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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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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Lampreys (sometimes also called lamprey eels) are a family of jawless fish Lampreys (sometimes also called lamprey eels) are a family of jawless fish
Open, or compound The fracture projects through the skin and there is a possibility of infection or Open, or compound The fracture projects through the skin and there is a possibility of infection or
Burns (skin) Burns (skin)
Ringworm Areas Ringworm Areas
Remove the heat source, and check the skin for redness. Massage the area, and notice muscle ... Remove the heat source, and check the skin for redness. Massage the area, and notice muscle ...
Corbel Vault, Interior of Tholos, The So-called Treasury of Atreus Corbel Vault, Interior of Tholos, The So-called Treasury of Atreus
Video: Types of antimicrobial substances (interferons & complement protein)

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