Pancreatic development is reviewed in man, mammals, and birds. Anatomi
cal differences and differing topography of pancreatic excretory ducts
are described ina series of mammalian species. Species differences ar
e discussed with respect to their embryological significance. The deve
lopmental potency of the hepatopancreatic ring is stressed, Cytodiffer
entiation of exocrine and endocrine cells is considered. (C) 1997 Wile
y-Liss, Inc.