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Fig. 3 | Journal of Nanobiotechnology

Fig. 3

From: Uptake and distribution of carboxylated quantum dots in human mesenchymal stem cells: cell growing density matters

Fig. 3

Confocal fluorescence microscopy images showing carboxylated quantum dots localization in MSC culture at different cell cultivation densities. At low cultivation density (5000 cells/cm2; top row), QDs (red) distribute intracellularly and at high cultivation density (20,000 cells/cm2; bottom row), QDs deposit on long cytoplasmic processes attaching cells 1 h (a, e), 3 h (b, f), 6 h (c, g) and 24 h (d, h), respectively, after QDs introduction. Scale bars 15 μm (ad) and 50 μm (eh)

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