Nona-Arginine Facilitates Delivery of Quantum Dots into Cells via Multiple Pathways

Figure 2

QD uptake with SR9 at different molecular ratios. QDs were premixed with SR9 at molecular ratios from 1 : 10 to 1 : 60. A549 cells were treated with QD/SR9. Values are mean  ±  SD from three independent experiments. Fluorescence intensity is normalized relative to the value at 1 : 10. ^∗𝑃<.01 versus 1 : 10; ^𝛼𝑃<.01 versus 1 : 20.