Cell to Cell Transmission (VIDEO) Rockefeller University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption When HIV infects a cell, it programs the cell to express the viral protein Env, which the virus uses to spread to neighboring cells. Above, Env (red) produced by one infected cell has recruited other, uninfected cells, causing them to fuse, and their nuclei (blue) to cluster. Credit ADARC Usage Restrictions This video may only be used to illustrate research described in the accompanying release. 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.