A colorful bunch: A series of fluorescent probes designed on the basis of fluorescence quenching caused by an excitonic interaction contain different dye moieties and fluoresce in various colors upon hybridization with their target nucleic acid. The picture shows simultaneous fluorescence in three colors in the nucleus of a cell containing an excess of three different microRNA strands. Left: differential interference contrast image.
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Ikeda et al. (2009) studied this question.
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