Letter: Secretory component and sudden infant death.
D006801:Humans; D007128:Immunoglobulin Fragments / Q000032:analysis*; D007223:Infant; D012635:Secretory Component / Q000032:analysis*; D013363:Submandibular Gland / Q000032:analysis; D013398:Sudden Infant Death
D007128:Immunoglobulin Fragments; D012635:Secretory Component