Figure 11.

Fluorescence microscopy images of calcein-AM (green) and propidium iodide (red). The macrophages differentiated into osteoclasts on (a) nt-TiO2 and (b) nt-TiO2-P for 4 days.

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