Movie 4

Hoxb8 macrophages migrating in an LPB tumor in vivo. Images were acquired by two-photon microscopy every 3 min during 2 h. Dynamics of Hoxb8 macrophages (labeled with cell tracker, shown as white on the left panel and red on the right panel) together with collagen fibers (imaged by second harmonics, represented in cyan) are shown.