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The kinetics of dendrimer uptake in tumor‐associated macrophages (TAMs) is size dependent in gliosarcoma. G4 dendrimers (green) exhibit faster uptake by TAMs than G6 dendrimers (red), with cell‐associated signal within 15 min after injection. G6 dendrimers maintain high accumulation within TAMs (blue) up to 48 hr postinjection. Scale bar = 40 μm
