Movie S4.

XYZ stack of GFP-expressing microglia in a tumor-bearing mouse imaged over 120 minutes. Note the microglia do not migrate, however they continuously extend and retract their processes and micro-processes. Also note possible phagocytic activity at time points 47 minutes and 75 minutes in the middle left view of the video, and at time point 92 minutes in the middle right view of the video. Frame rate = 10 fps.