Opening Microtubule (image) European Molecular Biology Laboratory Caption In the absence on Mal3p microtubules are unstable and can open at the seam. The image shows a microtubule with opening seam (bottom left), seen through the electron microscope. Credit Image by Linda Sandblad, EMBL Usage Restrictions None 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.