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Fig. 1
Physical characterizations and cytotoxicity of four types of RITC-conjugated mesoporous silica nanoparticles (RMSNs). (A) TEM images. Scale bar = 50 nm. (B) DLS, (C) zeta potential, and (D) nitrogen adsorption/desorption isotherms and corresponding pore size distribution plot of various types of RMSNs. (E) Cytotoxicity assay. CTX-TNA2 and U87-MG cells were cultured with different concentrations (100 and 200 μg/ml) of various types of RMSNs for 4 and 24 h in 10% serum-containing medium. Cell viability was detected using an MTT assay.
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