Sensitive fluorometric nanoparticle assays for cell counting and viability.


We have developed easy-to-use homogeneous methods utilizing time-resolved fluorescence resonance energy transfer (TR-FRET) and fluorescence quenching for quantification of eukaryotic cells. The methods rely on a competitive adsorption of cells and fluorescently labeled protein onto citrate-stabilized colloidal gold nanoparticles or carboxylate-modified… (More)
DOI: 10.1021/ac1017869


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