Fig. 6From: Excretable, ultrasmall hexagonal NaGdF4:Yb50% nanoparticles for bimodal imaging and radiosensitizationEffect of the nanoparticle treatment on the colony formation of C6 cells following 2 Gy X-ray irradiation. The cells were incubated with the nanoparticles overnight prior to irradiation. The surviving fraction for each treatment was tested using two-way ANOVA with Tukey’s multiple comparisons test. (*P < 0.05; *** P < 0.001)Back to article page