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Immunochemical stains for DAPI (blue), vimentin (green), and CD44 (red) for adhered fibroblasts on CNTs and CNTs/SF polymer surfaces for 12 h of incubation to observe the morphology of the cells ((a) CNTs polymer surface; (b) CNTs/SF polymer surface; scale bar: 67 μm for panel (a), 100 μm for panel (b)).
