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Figure 1 | Nanoscale Research Letters

Figure 1

From: Cytotoxicity Effects of Different Surfactant Molecules Conjugated to Carbon Nanotubes on Human Astrocytoma Cells

Figure 1

Digital phase contrast images of human astrocytoma cells exposed to surfactants or nanotube/surfactant conjugate solutions under ambient atmosphere at room temperature:a control, 60 min;b CNT/DNA, 60 min;c SC, 60 min;d CNT/SC, 60 min;e SDBS, 30 min;f CNT/SDBS, 30 min;g SDS, 30 min; andh CNT/SDS, 30 min. The concentrations of surfactants (b–h) and the SWCNTs (b,d,f, andh) were 0.5 mg/mL and 2 μg/mL, respectively.Arrows indicate proliferating cells. All images were acquired at 200× magnification directly from the wells.Scale bar: 100 μm

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