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Distribution of fluorescence imaging. (A) S. typhimurium-A1-R-GFP targeting the osteosarcoma PDOX after intra-arterial (i.a.) injection. (B) S. typhimurium A1-R-GFP targeting the osteosarcoma after intravenous (i.v.) injection. Confocal microscopy imaging with the Olympus FV1000 demonstrated S. typhimurium A1-R-GFP targeting the osteosarcoma PDOX. Scale bars: 12.5 µm.
