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Confocal laser scanning microscopy images of MG63 cells growing on Ti5 and control microspheres in spinner flask bioreactors at 4 days post culture (a, c) and 7 days post culture (b, d), respectively. Phalloidin stains the actin filaments of the cytoskeleton green, while propidium iodide stains the nuclei red. The white arrows in the images indicate the alignment of cytoskeletal filaments along the surface curvature.
