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Resolution: standard / high Figure 1.
TEM images of free PLGA nanoparticle; PLGA/PEI, and PLGA/PEI/pDNA. Scale bars: 100, 50, and 200 nm, respectively.
Liang et al. Nanoscale Research Letters 2011 6:447 doi:10.1186/1556-276X-6-447 |
