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  • Title: dsDNA-coated quantum dots.
    Author: Xing M, Shen H, Zhao W, Liu Y, Du Y, Yu Z, Chen X.
    Journal: Biotechniques; 2011 Apr; 50(4):259-61. PubMed ID: 21548911.
    Abstract:
    Because of their unique spectral properties, quantum dots (QDs) have recently proved useful as fluorescent labels for biosensing probes. We developed a versatile QD label by modifying dsDNA with biotin and thiol groups at opposite ends and attaching it to quantum dots via a metal-thiol bond. These dsDNA-coated QDs fluorescently label their targets through biotin-streptavidin binding and show excellent histological results when used to detect biotin-labeled chromosome probes. The dsDNA coating also circumvented the common problems of aggregation and steric hindrance that occur with other QD probes.
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