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We have studied the separation of single-stranded and double-stranded DNA in a matrix of entangled, linear poly-N,N-dimethylacrylamide. Our results give better insight into the mechanisms involved during separations in polymer solutions. The dependence of different parameters on DNA size, electric field, pore size and the polymer chain length are evaluated and compared to theoretical predictions. Striking differences between experimental data and predicted scaling laws are found. Our data should help to optimize DNA separation in capillary electrophoresis and to improve existing models for DNA separation in porous matrices.
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Christoph Heller (1999) studied this question.
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