Research Article
Labeling Stem Cells with a New Hybrid Bismuth/Carbon Nanotube Contrast Agent for X-Ray Imaging
Figure 1
Cell viability and Bi4C@US-tube uptake under different labeling concentration. (a) Average cell viability measured by fluorescence activation cell sorting (FACS) analysis. (b) Intracellular incorporation of Bi4C@US-tubes inferred by the concentration of Bi3+ ion/cell from ICP-MS measurements. The inset shows the plot for the lower concentration range.
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