Polyomavirus Infection (VIDEO) Michigan Medicine - University of Michigan This video is under embargo. Please login to access this video. Caption This video shows live-cell imaging of protein 'focus' points created in the endoplasmic reticulum membrane after polyomavirus infection. Time sequences of the images are shown at the top left corner and indicate time after addition of linker drug. The different color arrows (yellow, blue and pink) represent small foci that fuse into a larger focus (yellow and blue to green and then green and pink to red) over time. Credit Tsai laboratory, University of Michigan Usage Restrictions Credit Tsai Laboratory, University of Michigan License Licensed 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.