Circadian Variation of Secretory IgA in Nasal Secretions from Normal Subjects

Abstract
In normal [human] subjects the concentration ratio of secretory IgA (sIgA) to total IgA in nasal secretion was measured by means of enzyme-linked immunosorbent assays (ELISA). No marked circadian variation was disclosed in the sIgA/IgA ratio in nasal secretion.

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