Fig. 6From: In Vivo Bio-distribution and Efficient Tumor Targeting of Gelatin/Silica Nanoparticles for Gene DeliveryCellular uptake of PI by A549 and 3T3 cells incubated with DNA-PE, GS/DNA-PE, GS-PEG-Apt/DNA-PI, and GS-PEG/HA2-Apt/DNA-PI NPs for 4 h, as determined by flow cytometryBack to article page