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Effects of Ce6-PDT on the migration ability of human colon cancer SW480 cells. Cell migration ability was assessed by the scratch test. The linear scratch was made with a 10-μl sterile pipette tip, followed by the Ce6-PDT treatment (0, 0.125, 0.25, 0.5, 1.0, 2.0, 4.0, and 8.0 μg/ml, respectively). After 48 h, scratch wound healing was observed and analyzed.
