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Number of transfected cells and levels of transgene expression in channel of PLG disk for multiple DNA doses. A) Transfected cells (blue) in channel, scale bar: 250 µm. B) Quantification of number of transfected cells for different doses of pβgal. C) Levels of transgene expression after deposition of multiple doses of pLuc in one channel of the disk. Significant differences, based on a Tukey multiple comparisons analysis, are denoted by different letters (p<0.05).
