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Migration ability of UC-MSCs to H7402 cells was examined using a transwell assay under different conditions. (a) Fresh 1640, (b) H7402 cells, (c) H7402-CM. (d) Average number of cells migrated in the transwell assay in different conditions. The results were expressed as the mean±S.D. in five different fields from three independent experiments (*p<0.05 and **p<0.01).
