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(a) Gel electrophoresis of DNA remaining unejected with varying PEG concentrations (%w/w). Also shown are DNA length standards, full length phi29 DNA, and packaged phi29 DNA extracted from capsids. (b) Length of unejected DNA vs. PEG concentration. Each measurement was repeated ≥3×. Error bars in the length measurements indicate standard deviation and errors in the PEG concentration were determined by weighing the PEG solutions.
