Fig. 4
Oxygen delivery of oxygen enhanced the gene delivery efficiency in vivo. A GFP expression in mice bearing MCF-7 tumors after intratumoral injection with Saline, PAR-Lipo/pEGFP, O2@PL and PAR-Lipo/pEGFP + O2@PL. B Quantitative results of fluorescence intensity in A. C Immunofluorescence staining of GFP (green) and HIF-1α(red) after different treatment in vivo. Scale bars, 100 μm. All error bars are expressed as ± SD, n = 5