Bertschinger, M.Chaboche, S.Jordan, M.Wurm, F. M.2007-06-052007-06-052007-06-05200410.1016/j.ab.2004.07.020https://infoscience.epfl.ch/handle/20.500.14299/7660WOS:000224710600022582915464969DNA/*chemistry*Gene Transfer TechniquesIndicators and ReagentsMethodsNanostructures/*chemistryPolyethyleneimine/*analysis/chemistrySpectrum AnalysisA spectrophotometric assay for the quantification of polyethylenimine in DNA nanoparticlestext::journal::journal article::research article