Immunoglobulin A, Secretory


Colostral IgA

Exocrine IgA

IgA, Colostral

IgA, Exocrine

IgA, Secretory


Secretory IgA

Secretory Immunoglobulin A

The principle immunoglobulin in exocrine secretions such as milk, respiratory and intestinal mucin, saliva and tears. The complete molecule (around 400 kD) is composed of two four-chain units of IMMUNOGLOBULIN A, one SECRETORY COMPONENT and one J chain (IMMUNOGLOBULIN J-CHAINS).