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. Author manuscript; available in PMC: 2011 Mar 3.
Published in final edited form as: J Control Release. 2009 Oct 27;142(2):229–237. doi: 10.1016/j.jconrel.2009.10.021

Fig. 4.

Fig. 4

Stability of polyplexes of plasmid DNA and PEG-b-PAEM at N:P ratio of 8:1 in 20 mM HEPES, pH 7.4. (A) Time-dependent aggregation of polyplexes in 150 mM NaCl. (B) Dissociation of DNA from polymer induced by increasing amount of heparin. Arrows point to the lowest heparin concentration at which disruption of polyplex was observed.