Localization of QDs in J774A.1 cells. (A) Cells after treatment with 47 μg/ml QDs for 24 h were co-stained with DAPI and FITC-conjugated phalloidin. Fluorescence for DAPI (blue), FITC (green), and QDs (red) was examined through confocal laser scanning microscopy. The three colors were merged together. Original magnification, ×400. (B) Intracellular cadmium mass in cells after exposure to QDs with different surface modifications for 24 h was analyzed by ICP-MS (n = 3).
Qu et al. Nanoscale Research Letters 2013 8:198 doi:10.1186/1556-276X-8-198