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In vitro viability studies of A357 and HeLa cells against free single drugs, Pt@PAA-MSN, PAA-MSNDOX and Pt@PAA-MSNDOX: (a) A357 cells incubated for 24 h; (b) HeLa cells incubated for 24 h; (c) A357 cells incubated for 48 h; (d) HeLa cells incubated for 48 h [46].
