ECHO Virus Infection
Alternate Names : Nonpolio Enterovirus Infection
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ECHO Virus Type 9 Exanthem
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Many viruses cause skin rashes (exanthem). This child was diagnosed with an ECHO virus infection. (Courtesy of the Centers for Disease Control.)
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Antibodies
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Antigens are large molecules (usually proteins) on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, drugs, and foreign particles. The immune system recognizes antigens and produces antibodies that destroy substances containing antigens.
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