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BMP2 induces filamentous actin polymerization in Tgfbr3−/− epicardial cells and requires Src. (A-H) Wild-type and Tgfbr3−/− epicardial cells were stimulated with BMP2 (2 ng/mL) in the presence or absence of 1µM PP2 and subject to phalloidin staining (A-H) and the f/g actin assay (I). #=p < 0.005, *=p < 0.05.
