Immunoglobulin A (IgA )

[ Immunoglobulin A, IgA, sIgA ]

Immunoglobulin A (IgA or sIgA) is an antibody, functionally part of the adaptive immune system, that defends the mucous membranes. It represents about 15% of total immunoglobulins produced.

sIgA is the secretory version of the antibody.

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