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RGB images of cells labeled with antibody conjugated NPs. EGFR+ MDA-MB-468 cells labeled with anti-EGFR gold nanorods (a). IGF-1R+ A549 cells labeled with anti-IGF-1R silver nanospheres (b). HER-2+ SKBR-3 cells labeled with HER-2 Ab gold nanospheres (c). Scale bars = 10 μm
