immunoglobulin_a
1. [ noun ] (chemistry,zoology,biochemistry,immunology) 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
Related terms: Ig immune_serum_globulin
Similar spelling:   immunoglobulin
  immunoglobulin_m
  immunoglobulin_g
  immunoglobulin_e
  immunoglobulin_d
  immune_globulin