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Drug delivery via DNA nanostructures to cells with MDR. Top: schematic showing a DNA tetrahedral nanostructure in the role of a carrier for the cancer drug Dox for delivery applicability to MDR cells such as MCF‐7 cells drug resistant cells. Bottom: fluorescence microscopic images of normal MCF‐7 and MCF‐7/ADR cells treated with Dox and Cy5‐labeled tetrahedron carrying Dox (Td) or not (control). Reproduced with permission.[[qv: 144f]] Copyright 2013, The Royal Society of Chemistry.
