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Poor solubility of polycation complexes with DNA is one drawback for their in vivo use as gene delivery systems. PEGylation often can improve the solubility of the complexes, minimize their aggregation and reduce their interaction with proteins in the physiological fluid. We investigated in vivo application of polyethylene glycol (PEG) modified polyethylenimine (PEI) for gene expression in the central...
Methods for extraction and isolation of intact RNA are often laborious, time consuming, and preclude the direct analysis of peptides. Similarly, the conditions for extraction and isolation of peptides are unsuitable for the isolation of intact RNA. Thus, to study changes in the levels of neuropeptides and gene expression of the corresponding mRNAs, separate procedures are required. A simple and...
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