Definitions for "Immunoglobulin A"
The body's first line of defense against infectious diseases and is present in seromucous secretions such as saliva, tears, nasal fluids, sweat and secretions of the lung and genito-urinary and gastro-intestinal tracts.
An immunoglobulin found in body fluids such as tears and saliva and in the respiratory, reproductive, urinary, and gastrointestinal tracts. IgA protects the body's mucosal surfaces from infection.
one of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts