Fig. 4

Cell migration analysis of SFRP1 knockdown in caco-2 cells and SFRP1 overexpression in sw1116 cells. Caco-2 cells treated with SFRP1 knockdown and sw1116 cells overexpressing SFRP1 were seeded in the upper chamber of transwell filters. After 24 h incubation, the top of the filters were scraped and cells that Matrigel-invaded through the filters were fixed and stained. Images were representative of invaded cells of one field