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(A) Proposed transition of the cationic dipeptide nanotubes (CDPNTs) into vesicles for oligonucleotide delivery. TEM image of the CDPNTs at the concentrations of (B) 10 mg/mL and (C) 1 mg/mL. (D) Fluorescence images of HeLa cells after incubation for 24 h with the complexes of CDPNTs and fluorescently labelled ssDNA (green). Adapted with permission from ref. 33. Copyright 2007, Wiley-VCH.
