Figure 7From: Shape-controllable synthesis of hydrophilic NaLuF4:Yb,Er nanocrystals by a surfactant-assistant two-phase systemCytotoxicity of Cit-NaLuF 4 . Cell toxicity was determined by MTT assay using MGC-803 cells and GES-1 cells incubated with 0 to 80 μg/mL Cit-NaLuF4 for 24 h at 37°C in the dark. Data represents mean ± SD (n = 5).Back to article page