Tumor samples were harvested for (A) histological analysis (H&E and survivin staining), (B) RT-qPCR and (C) western blot analysis of survivin expression levels following survivin siRNA nanoliposome treatment. The mRNA expression levels of survivin are measured relative to GAPDH (magnification ×40). ***P<0.001, vs. the NC-IV group. H&E, hematoxylin and eosin; IHC, immuohistochemistry; RT-qPCR, reverse transcription-quantitative polymerase chain reaction; siRNA, small interfering RNA; NC-IV, negative control small interfering RNA administered intravenously; DOX, intraperiotoneal injection of doxorubicin hydrochloride; SU-IV, intravenous injection of survivin small interfering RNA nanoliposome; SU-IT, intratumoral injection of survivin small interfering RNA nanoliposome.