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MCF7 cells (left column, (a) and (c)) and Fluoresbrite® YG Microspheres (right column (b) and (d)) embedded in engineered tissues. Images (a) (MCF7 cells) and (b) (microspheres) are imaged with the bright field of a confocal microscope (Olympus IX71). Images (c) and (d) are fluorescent images, the MCF7 embedded QDs, (c), imaged with the TRITC filter and the microspheres, (d), imaged with the FITC filter.
