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Thapsigargin impairs actin cytoskeleton organizations in A549 cells. The reductions of F-actin fibers by thapsigargin (1 nM, 100 nM, and 1 μM for 6 and 24 h) treatments were shown by immunostaining. Red fluorescence is indicated by Rhodamine-phalloidin probes, green by RhoA antibody, and blue by DAPI.
