To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video S3 Related to Figure 2. IL6 seeking cell migrates towards an IL6 source cell. One-hour time-lapse of an IL6 seeking cell co-cultured with IL6 source cells. Scale bar is 20 μm. Experiment was repeated at least 3 times. Engineering mammalian cells to seek senescence-associated secretory phenotypes Anam Qudrat, Janice Wong, and Kevin Truong J Cell Sci 2017. 130:3116-3123; doi: 10.1242/jcs.206979 Download Original Video