Atlas of foodborne infections
transmitted by contaminated food and water

Atlas of Patogens Contents Information sources Glossary Administration

Immunoglobulin A (IgA)

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A class of immunoglobulin that is the second most common immunoglobulin in blood. It is the main immunoglobulin found in secretions, such as tears, saliva, colostrum, mucous membranes of the intestine, respiratory and reproductive tracts. IgA provides local defense against microorganisms as they try to infect mucous membranes.

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