Fig. 4From: Nanoparticle-mediated selective Sfrp-1 silencing enhances bone density in osteoporotic miceFluorescent microscopy and transmission electron microscopy images of A, C LPNPs and B, D Apt-LPNPs. Nanoparticles are labeled in green, cytoplasm is marked in red and cell nuclei are stained in blue. In electron micrographs LPNPs and Apt-LPNPs are indicated with arrows. Scale bars: Fluorescent microscopy: 20 µm. Electron micrographs: 2 µmBack to article page