Research Article
Synthesis of Polymer Assembled Mesoporous CaCO3 Nanoparticles for Molecular Targeting and pH-Responsive Controlled Drug Release
Figure 7
(a) Cell viability of HeLa cells co-cultured with the pure MCNs at the periods of 24–72 h and Cell viability of HeLa cells co-cultured with the free DOX and MCNs-DOX after 24 h (b), 48 h (c) and 72 h (d). 
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