in the presence of high blood glucose , qualitative histochemical studies demonstrated diminished islet insulin and an unusual reaction with anti-somatostatin : ( 1 ) paucity of the usual cells that stain darkly for somatostatin and ( 2 ) striking staining of intermediate hue in most islet cells and in ( 3 ) multitudes of cell nests in exocrine parenchyma .
C0021641
insulin
C0022131
islet cells