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. 2021 May 20;13(5):761. doi: 10.3390/pharmaceutics13050761

Figure 1.

Figure 1

Transmission electron micrographs of 150 nm (a), 60 nm (b), and 30 nm (c) SLNs. The nanoparticles were negatively stained with 2% phosphotungstic acid. A JEOL JEM-1230 TEM (JEOL, Peabody, MA, USA) was used to obtain the images.