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. 2015 Dec 1;5:17478. doi: 10.1038/srep17478

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Copyright © 2015, Macmillan Publishers Limited

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High power (100× lens and 4× optical zoom) brightfield ((a) left) and fluorescent ((a) middle) microscopy of doxorubicin loaded nanotubes, visible via the intrinsic fluorescence of doxorubicin (emission at 488 nm: overlay (a) right). Both magnetic and non-magnetic nanotubes show no cytotoxicity towards SHSY5Y neuroblastoma at all concentrations tested (b), but cause over 40% loss in viability when incubated for 24 hours with doxorubicin prior to cell treatment (c) (n = 4, scale bars = 5 μm).