Hayem A, Laine A, Bailleul V, Lebas J. [Quantitative determination of IgA from human bronchial mucus (author's transl)].
Clin Chim Acta 1975;
61:9-17. [PMID:
238765 DOI:
10.1016/0009-8981(75)90392-7]
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Abstract
Before quantitative analysis of bronchial mucus proteins, sputum must be transformed into a homogeneous medium: this is done by ultrasonic action and contact with cationic resin AG 50 W X 2. Then, acid mucins are fixed on Ecteola-cellulose, and proteins extracted by a phosphate/saline buffer at pH 5. IgA is estimated by electroimmunodiffusion. Reproducibility of the method is discussed: the accuracy for IgA values is 4%.
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