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| Figure 5: Time dependency of QDs655-Tf labeling in the U87 cells. Phase and fluorescent images of U87 cells labeled with QDs655-Tf at a concentration of 1.0 nM after various time periods of incubation (day 0, 1, 2, 5 and 7). The red fluorescence derived from QDs655-Tf was maintained until at least day 2. The white bar indicates 100 µm. |
