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  • Title: Secretory IgA is a component of rabbit lung surfactant.
    Author: Paciga JE, Shelley SA, Balis JU.
    Journal: Biochim Biophys Acta; 1980 Sep 01; 631(3):487-94. PubMed ID: 6893289.
    Abstract:
    Secretory IgA is a major protein component of rabbit lung surfactant purified by NaBr density gradient centrifugation from endobronchial lavage and minced lung tissue. Secretory IgA was found in both surfactant and non-surfactant fractions obtained from endobronchial lung washings. By contrast in minced-lung washings, which are not contaminated with proteins from the upper respiratory tree, secretory IgA is prominent only in the surfactant fraction. These findings indicate that in rabbit lung secretory IgA is present in the alveoli and is intimately associated with the surfactant system.
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