Fig. 3

In vitro cytotoxicity of the nanoparticles. a Cell viabilities of MKN28 after being co-cultured with drugs for 48 h. The concentration of Tet was 2.4 times as much as the concentration of CDDP. b Photographs of MKN28 cells under the light microscopy (200 ×) after being co-cultured with drugs for 48 h