[[Image:LH sIgA.png|thumb|right|250px|<p>1 = Heavy Chain</p><p>2 = Light chain</p><p>3 = J chain</p><p>4 = Secretory component</p>]] | [[Image:LH sIgA.png|thumb|right|250px|<p>1 = Heavy Chain</p><p>2 = Light chain</p><p>3 = J chain</p><p>4 = Secretory component</p>]] |