CTGF is expressed in the mouse pancreas. A, CTGF (red) was expressed in the islets, ducts (d), and blood vessels (data not shown) at e18.5. CTGF expression did not overlap with glucagon (gluc; green). Scale bar, 25 μm. B, Endocrine-specific CTGF expression was extinguished in adult islets. C, CTGF expression in the ductal network was maintained in the adult pancreas.