Totally Tubular Ride through the Brain (video) NIH/National Institute of Neurological Disorders and Stroke Share Print E-Mail Loading video... Caption Researchers watched TAT proteins (green) journey into microtubules (red). TAT proteins are known to label the insides of the tubes. They observed that TAT can move quickly, back and forth, through microtubules while searching for sites to label. Credit Courtesy of the Roll-Mecak lab, NINDS Usage Restrictions For educational purposes only. 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.