A histomorphological study on the endocrine portion of the pancreas in swan and fowl

The distribution and the histomorphological features of the endocrine portion of the pancreas of both swan and fowl were studied. The Insulae pancreaticae in both birds could be differentiated into three variaties, viz.: The Alpha-, the Beta-, and the mixed-islets. The Alpha-islets were consisted of Alpha-cells and few Delta-cells. The Beta-islets were composed to various amounts of Beta- and Delta-cells. The mixed-islands contained either Alpha-cells and few Beta-cells or Alpha-cells and few Beta- and Delta-cells.