One of the five classes of immunoglobulins; one of the most common immunoglobulins, it is mainly present in body secretions and is the chief antibody in the mucous membranes of the gastrointestinal and respiratory tract and in saliva and tears. Immunoglobulin A (IgA), which is found in high concentrations in the mucous membranes, particularly those lining the respiratory passages and gastrointestinal tract, as well as in saliva and tears. Sample The patient’s serum is needed […]
