Cajal-Retzius Cells (IMAGE) Neural Regeneration Research Caption Cajal-Retzius cells were observed in the molecular layer of the dentate gyrus as early as embryonic day 16.5, and were densely concentrated in the molecular layer of the dentate gyrus (immunohistochemical analysis). Credit <i>Neural Regeneration Research</i> 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.