Video 7. Intravital imaging reveals CTL recruitment to site of intratumoural CCL3 injection.

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(Injection Process) 2D time-lapse imaging of intratumoural injection of shear-thinning hydrogel containing recombinant CCL3 and Dextran-AF647 (white). (Injection Site) 2D fluorescence confocal image showing tumour tissue with adoptively transferred WT CTLs (green) and CCR5^-/- CTLs (magenta) immediately following injection. (Post Injection) 3D long-term (5.6 hr) intravital imaging around intratumoural injection site. Scale bars, 200 μm.