Histochemical Studies on Human Mucous Secreting Glands in the Soft Palate, Uvula and Esophagus

Abstract
The application of histochemical tests on the mucous glands in the soft palate, uvula and esophagus (esophageal glands proper and esophageal cardiac glands) disclosed the presence of sulfate esters and carboxylic groups in the mucosubstances. The basophilia decreased progressively in the oral-aboral direction, acidic mucosubstances (sialomucins and sulfomucins) being prevalent in the uvula, being still abundant in the esophageal glands, and totally lacking in the gastric cardia glands immediately below the transition of Malpighian to gastric epithelium.

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