Mesenchyme Surrounds Developing Pancreas (image) University of California - San Francisco Share Print E-Mail Caption The mesenchyme (green cells) surrounds the developing pancreas (red cells) and supports its growth. Credit L.Landsman/UCSF. Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.