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  • Title: A simple and sensitive method for visual detection of heparin using positively-charged gold nanoparticles as colorimetric probes.
    Author: Cao R, Li B.
    Journal: Chem Commun (Camb); 2011 Mar 14; 47(10):2865-7. PubMed ID: 21246153.
    Abstract:
    The electrostatic interaction between the negatively-charged heparin and the positively-charged gold nanoparticles leads to aggregation of gold nanoparticles and a color change from red to blue in solution, thus providing a simple and visual approach to colorimetric detection of heparin.
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