Fig. 6.

Section from the adult pancreas stained with antibody against galanin (a–c) and Hu (b), and somatostatin (c). RFP marked mnx1+ population of β cells in the transgenic line of the zebrafish (a–c). RFP+ cells were present mostly only in one (primary) islet, whereas somatostatin-positive cells were located in all the islets (a–c). Ganglion containing galanin-IR neurons is visible outside the pancreatic tissue, close to the intestinal wall (a, a″, c, c′). Neurons inside the pancreatic tissue are also visible; however, they were mostly galanin-negative (arrowheads, b). Galanin-IR fibers richly supplied pancreatic islets (c). I intestine, Pi pancreatic islet. Scale bars 100 µm