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Transfection efficiencies of TAT/DNA and 50% TAT-PEG-LABL/DNA complexes in activated A549 cells (overexpressing ICAM-1) after incubation with free LABL peptide or anti-ICAM-1 mAb prior to exposure to TAT complexes. Complexes were formed at an N/P ratio of 30 and 150 mM CaCl2. (* = p<0.05, ** = p<0.01, one-way ANOVA, Tukey post test).
