In the Brain, Broken Down 'Motors' Cause Anxiety (video) Cell Press Share Print E-Mail Loading video... Caption This video (S3 in the paper) shows the transport defect of the serotonin receptor in a KIF13A knock out neuron compared with a wild type neuron. Credit Cell Reports, Zhou et al. Usage Restrictions Credit Required Share Print E-Mail 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.