Stress fiber formation in human RMS cells.

Upper panel, CW 9019 cells; middle panel, RH30 cells; and lower panel, SMS-CTR cells. Left half of the figure shows cells not exposed to SDF-1β; right half of the figure shows cells exposed to SDF-1β (300 ng/mL). Dark images are immunofluorescence pictures; light images are normal light pictures. Representative cells were selected.