Journal
ACTA HISTOCHEMICA
Volume 104, Issue 2, Pages 209-215Publisher
ELSEVIER GMBH
DOI: 10.1078/0065-1281-00635
Keywords
glycoconjugates; lectin histochemistry; digestive apparatus; Umbrina cirrosa (L.) fries
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Glycoconjugates present in the various parts of the digestive apparatus (oesophagus, stomach, intestine) of 27, 34 and 44 days-old Umbrina cirrosa (L.) fries were characterised. by means of lectin histochemistry in conjunction with sialidase digestion and KOH treatment. High amounts of carbohydrates were detected especially in goblet cells of the oesophagus. Positivity obtained with the various lectins in oesophagus, stomach and intestine did not change during the development of the fries examined. D-Gal and D-GalNAc appeared to occupy a terminal position in oligosaccharidic chains whereas they are linked to sialic acid residues in adult subjects, which suggests an incomplete chemical structure of the glycoconjugates secreted by the digestive apparatus of fries.
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