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Mean scattering intensity of 0.071 +/− 0.048 for IGF-1R expressing A549 cells exposed to anti-IGF-1R nanospheres (+/+), 0.019 +/− 0.004 for A549 cells exposed to IgG Ab nanospheres (+/IgG), 0.019 +/− 0.008 for A549 cells unexposed to conugates, and 0.020 +/− 0.004 for IGF-1R low-expressing MDA-MB-468 cells exposed to anti-IGF-1R nanospheres.
