title: Circadian and interpersonal variability of IgA in nasal secretions.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D005779:Immunodiffusion; D007070:Immunoglobulin A; D008297:Male; D008875:Middle Aged; D009093:Mucus / Q000276:immunology* / Q000378:metabolism; D009297:Nasal Mucosa / Q000378:metabolism*; D011506:Proteins / Q000032:analysis; D012621:Seasons
chemical_list: D007070:Immunoglobulin A; D011506:Proteins