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Fig. 3. U73122 and siRNA inhibit actin protrusions. BE cells treated with siRNA or U73122 were plated on Matrigel for the times shown, fixed and then co-stained with Texas-Red Phalloidin (F-actin: red) and FITC {alpha}-tubulin antibody (Tubulin: green). Stains were visualized by confocal microscopy. Arrow heads represent F-actin protrusions.