A Better Way to Trace Neurons (IMAGE) Cold Spring Harbor Laboratory Caption These images demonstrate the increased efficiency of the improved retrograde viral tracing method introduced by the Kepecs lab at CSHL. While in one register, a classic tracer (bottom right) performs about as well as the improved one (top right), the improved tracer records neurons far more robustly (top middle) in a different register (green dots). Both tracers were injected in the same place and traced neuronal connections between the basolateral amygdala and the medial prefrontal cortex. Credit Kepecs Lab, CSHL 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.