English noun: immunoglobulin A | |||
1. | immunoglobulin A (substance) one of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts | ||
Synonyms | IgA | ||
Broader (hypernym) | Ig, immune gamma globulin, immune globulin, immune serum globulin, immunoglobulin | ||