Abstract
Human bronchial mucus glycoproteins of different chemical types were isolated by Ecteola and gel exclusion chromatography. Chemical analysis indicated polydispersity with regard to content of sulfate and sialic acid. No blood group A, B or H activity was found in these glycoproteins. Compositions are reported for amino acid and sugar residues for several fractions obtained from both cystic fibrotic and chronic bronchitic mucus. It is noteworthy that glycoproteins extracted from a single subject contain molecules with different acid groups as well as significant differences in carbohydrate chain length.
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