CHODL Expression (IMAGE) Simons Foundation Caption A relatively new method enables researchers to study tissue samples in high resolution to determine where genes are expressed. In these four cross-sections of a mouse spinal cord, each dot represents an individual measurement site. Yellower dots represent regions with elevated expression of the CHODL gene. Credit S. Maniatis et al./Science 2019 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.