Image (IMAGE) Higher Education Press Caption Migrasome images of Tetraspanin4-GFP over-expressed L929 cells were collected by confocal microscopy at a proper focal plane or improper (Upper or Lower) focal plane. Scale bar, 10 m. Credit Yuwei Huang,Li Yu Usage Restrictions none 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.