[HTML][HTML] IgA subclass switch recombination in human mucosal and systemic immune compartments

M Lin, L Du, P Brandtzaeg, Q Pan-Hammarström - Mucosal immunology, 2014 - Elsevier
Human immunoglobulin A (IgA) comprises two IgA subclasses, IgA1 and IgA2, whose
distribution has been shown by immunohistochemistry to be different in various body
compartments. In comparison with systemic immune compartments, we investigated the IgA
switch profiles at the molecular level in salivary and lacrimal glands, nasal mucosa, and
proximal and distal gut mucosa. Direct switching from IgM to IgA1 or IgA2 predominated in
all immune compartments analyzed. Similar composition of the Sμ–Sα1 and Sμ–Sα2 …