Common Cold
Alternate Names : Cold, Upper Respiratory Infection - Viral
Pictures & Images
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Throat Anatomy
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Structures of the throat include the esophagus, trachea, epiglottis and tonsils.
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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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