Central and peripheral neuroendocrine organs (hypothalamus, pituitary gland, peripheral ganglia of medrol nervous system, adrenal medulla, paraganglia).
Localization of cells of the APUD system.
CNS and peripheral nervous system (glial cells and neuroblasts).
Neuroectodermal cells in the composition of the endocrine glands of endodermal origin (C-cells of the thyroid gland).
Endocrine glands of endodermal origin (parathyroid glands, pancreatic islets, single endocrine cells in the walls of the pancreatic ducts).
Mucosa of medrol pills tract (enterochromaffin cells).