Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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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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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
Structure of a typical prokaryotic cell
Structure of a Kerr (Rotating) Black Hole
Structure of phosphate ion and hybrid atomic orbitals of phosphate ion