Abstract
The coupling of Ricinus communis lectins to Sephadex G 25 was used in order to study mucins and other glycoproteins from human bronchial secretion. The major part of human bronchial mucins and other glycoproteins such as immunoglobulins A, bronchotransferrin and alpha1-antichymotrypsin were isolated by this procedure. A parallel study of human bronchial mucosa was achieved with peroxidase labeled Ricinus communis lectins; this study characterized goblet cells and mucous cells which contain mucins, and serous cells which are involved in the synthesis or the secretion of the other glycoproteins.
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