Figure 7.

Fluorescence microscopy images of osteoblast cells marked with calcein-AM (green) and propidium iodide (red). The cells were cultured on (a) Ti, (b) nt-TiO2, and (c) nt-TiO2-P for 2 days.

Koo et al. Nanoscale Research Letters 2013 8:124   doi:10.1186/1556-276X-8-124
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