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Cytoskeletal morphology and spreading of hMSCs on TC and TC-AAC after 24 hours of incubation. Representative images of cells stained with phalloidin for actin filaments (green) and nuclei counterstained with 4′,6′-diamidino-2-phenylindole (blue). hMSC = human mesenchymal stem cell; TC = titanium coating; TC-AAC = type I collagen covalently immobilised on TC.
