Fig. 3From: DNA Tetrahedron Delivery Enhances Doxorubicin-Induced Apoptosis of HT-29 Colon Cancer CellsThe uptake efficiency of HT-29 cells after being incubated with different complexes for 24 h. a Confocal microscopy detection (red is fluorescence excitation light of Dox, scale bar = 10 μm). b Intensity of cellular fluorescence. **P < 0.05 when compared with the group of DNA tetraBack to article page