Stem Cell Growth Comparison (image) The University of Texas at El Paso Share Print E-Mail Caption A) Stem cell colonies adhere to and grow on live feeder cells. B) This phenomenon is unaltered when feeder cells are fixed, or dead. Credit Kiralise Silva / UTEP Usage Restrictions Credit Required. 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.