How T7 Infects Cells (image) University of Texas at Austin Caption The top images are tomograms of the virus in action. The illustrations show T7 using its fibers to "walk" across the cell surface and infect the cell. Credit From Hu et. al. 2013, Science Express. 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.