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Photo-toxicity of GAG@mSiO2 nanoparticles. Cell viability of MDA-MB-231 cells calculated using MTT assay upon exposure with blue light at different doses of 0.165, 0.33 and 0.495 J/cm2. Experiment was performed using quadruplicates and the data are expressed mean ± S.E.M. Statistical significance at **p < 0.01 was calculated using 2-way ANOVA with Tukey post-test.
