Figure 2From: Optical characterization of colloidal CdSe quantum dots in endothelial progenitor cellsConfocal imaging of QD-uptaken EPCs at 450 nm (a) and at 616 nm (b). (c) is the confocal imaging at 616 nm merged with a differential interference contrast image. Built-in excitation laser source at 458 nm was used. Excitation power control was 20%.Back to article page