THE ENDOCRINE PANCREAS OF LACERTIDS - AN IMMUNOCYTOCHEMICAL STUDY OF THE GENERA PEDIOPLANIS AND MEROLES

The endocrine pancreas from 2 genera of lacertid lizards (Pedioplanis and Meroles) was investigated immunocytochemically for the presence of immunoreactivity to mammalian antisera to insulin (I), glucagon (G), pancreatic polypeptide (PP), peptide tyrosine tyrosine (PYY), neuropep tide tyrosine (NPY), somatostatin 14 (SRIF 14) and somatostatin 28 (SR IF 28), pancreastatin (Pst), galanin (G1), oxytocin (OT). Cells immuno reactive (IR) to all the antisera used, and nerve fibers IR only to an tigalanin were found. Moreover, three types of colocalized immunoreact ivities were detected: type 1 (PP/PYY/NPY), type 2 (G/PP/PYY/NPY), and type 3 (G/PYY/NPY/Pst).