brain cortex (IMAGE) Cold Spring Harbor Laboratory Caption Left: Each colored dot in this image of the brain’s outer layer, or cortex, is an individual gene. Right: Using BARseq, scientists can see how genes are clustered and identify the corresponding neurons, the larger colored dots seen here. Credit Chen lab/Allen Institute for Brain Science Usage Restrictions Attribution required License Original 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.