Seeing red: A new methodology for the on-bead screening of proteins has been developed with the aid of red-emitting quantum dots. Use of this nanomaterial allowed a dual-color fluorescence assay to be developed that overcomes the limitation of the autofluorescence of TentaGel beads. The figure shows a positive control (red fluorescence) and a negative control (background green fluorescence).
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Olivos et al. (2003) studied this question.
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