Figure 3

TEM images of DOPE-DOTAP/221 miR sandwiching as an example. (A) DOPE-DOTAP/AuNP. (B) DOPE-DOTAP/AuNP + Stem probe. (C) DOPE-DOTAP/AuNP + Stemprobe + 221 miR. (D) DOPE-DOTAP/AuNP + Stem probe + 221 miR + p19 on the copper grid.