Cell Death (IMAGE) Stowers Institute for Medical Research Caption Cell death (labeled in red) within the neural crest cell progenitor population results in a reduced population of neural crest cells (labeled in green) in a polr1d mutant zebrafish embryo. Credit Trainor Lab Usage Restrictions None License Licensed content 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.