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[The morphofunctional characteristics of the enterochromaffin cells of the major duodenal papilla in the dog during experimental fasting].

A luminescent-histochemical method was used in investigation of the enterochromaffin cells (EC-cells) of the ampulla in the major duodenal papilla of 3 control dogs and 6 dogs under experimental fasting. In the ampulla wall a large number of EC-cells containing serotonin and catecholamine were detected. The degree and shining colour of these endocrine cells depend upon their interrelationship. During fasting changes of secretory activity and fluorescence index of EC-cells in major duodenal papilla of dogs take place.