Abstract
Monolayer cell cultures of embryonic chicken pancreas contain functionally active insulin, glucagon and somatostatin-containing cells as evidenced by immunohistochemical and radioimmunoassay techniques. Hormone release is in relation to the number of each cell type present and responds to known specific secretory stimuli. The relatively high numbers of D-cells and amounts of immunoreactive somatostatin released by this preparation makes this system a suitable model for studies of somatostatin function and secretion.