Epithelial mucins of the gastro-intestinal tract of Egernia cunninghami.

Epithelial mucins of the gastro-intestinal tract of Egerina cunninghami, an Australian lizard, were investigated by several histochemical stains. The results obtained showed that the gastro-intestinal tract of this reptile has several types of mucus-secreting cells. Mucins secreted by the oesophagus, intestines and cloaca were predominantly acid-sulphated mucins, while the mucus neck cells of the gastric glands produced neutral mucins and the epithelial cells lining the gastric surface secreted a mixture of both neutral and acid mucins.