Anatomy and Architecture of the Neocortex (IMAGE) Allen Institute Caption Gross anatomy and layered architecture of the neocortex during prenatal and postnatal development. Nissl-stained brain sections show early expansion of dividing progenitor cells (pink) followed by later generation of cortical neurons (yellow, orange), paralleling the increased folding or gyrification of the developing cortex. Credit Allen Institute for Brain Science Usage Restrictions With proper credit to: Allen Institute for Brain Science 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.