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KMID : 0381920120420010001
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Korean Journal of Microscopy
2012 Volume.42 No. 1 p.1 ~ p.7
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Distribution of the Quantum Dot Nano-particles that Penetrate Skin and Distinction of Combined Osmium Tetroxide in Electron Microscopic Analysis
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Choi Ki-Ju
Park Sang-Yong
Lee Jeong-Min
Shin Heon-Sub
Yang Jung-Eun
Lee Don-Gil
Garfurjon T. Mavonov
Yi Tae-Hoo
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Abstract
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The possibility of nanoparticles (NPs) in biotechnology had been discussed by biomedical investigators. Here we report to suggest a solution and problems when using electron microscopy to determine the distribution of quantum dots (QDs) nanoparticles that penetrate skin. The results of this study showed that NPs were able to penetrate stratum corneum (SC) and sebocyte via hair follicle. However, we have found artifacts such as nanoparticles that are produced from combination of free fatty acid and osmium tetroxide during specimen preparation. It is usually difficult to identify NPs. Therefore, we tried to resolve these problems by comparing the cross-correlation image pattern that are derived from the images of sample that had been processed differently. This method can contribute to more accurate interpretation and minimal errors during the analysis using quantum dot as tracer.
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KEYWORD
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Cross-correlation image, Nanoparticle, Penetration, Quantum dots, Skin
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