title: Circadian variation of secretory IgA in nasal secretions from normal subjects.
abstract: In normal 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.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis*; D007071:Immunoglobulin A, Secretory / Q000032:analysis*; D008297:Male; D009297:Nasal Mucosa / Q000032:analysis / Q000378:metabolism*
chemical_list: D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory