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(A) Gel electrophoretic analysis of DNA TD (1, 50 bp marker; 2, TD; 3, 1F-TD; 4, 2F-TD; 5, 1SL2B-TD; 6, 2SL2B-TD; 7, 1F/1SL2B-TD; 8, 2F/2SL2B-TD); (B) AFM image of DNA TD (green triangles outline the TD); (C) concentration of loaded DOX by DNA TD with increasing added DOX; (D) concentration of loaded DOX by DNA TD with increasing incubation time.
Abbreviations: TD, tetrahedron; bp, base pair; F, folic acid; AFM, atom force microscopy; DOX, doxorubicin.
