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Effects of melatonin (M) and radiation (R) on endothelial cell migration analyzed through the wound healing assay. Representative photomicrographs of initial and after 10 h are shown at 10 × magnification and migration distance was measured as described in Material and Methods. Migrated area data shown are expressed as Mean ± SEM of four experiments. a, p < 0.05 vs C (control); b, p < 0.01 vs R.
