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. 2005 Jan 7;33(1):27–42. doi: 10.1093/nar/gki142

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© 2005, the authors Nucleic Acids Research, Vol. 33 No. 1 © Oxford University Press 2005; all rights reserved

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Confocal microscope images of the free uptake of fluorescein-labelled CPP conjugates containing additional cationic charge (green) into HeLa cells (nuclei stained red). Vertical Panels as in Figure 4 legend. Horizontally, (A) Conjugate 15 (OMe/LNA oligo B conjugated with R₄-Tat), (B) Conjugate 17 (OMe/LNA oligo B conjugated with Tat-Tat), (C) Conjugate 18 (OMe/LNA oligo B conjugated with K₄-Tat) and (D) Conjugate 18 (OMe/LNA oligo B conjugated with K₄-Tat), 24 h experiment.