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(A) Complex size with condensed DNA. Polydispersity index (PDI) is indicated for each sample. (B) Flow cytometry transfection data for BT-PEI/DNA or PEI/DNA complexes formed at various N/P ratios. (C) Fluorescence micrographs of cells transfected with BT-PEI/DNA or PEI/DNA (both at N/P = 10 carrying pGFP) at 24 hours post transfection.
