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: Detection of plasmid DNA in oesophageal tissue three days after direct gene transfer with DNA- liposome complexes by PCR. A specific band of 318 bp was detected after transduction with RSV-LacZ using direct injection (RSV-LacZ lanes 1-3), but not in controls, where Bluescript SK with liposomes was injected (control lanes 1-3). The 1 kB ladder (Gibco) was used as a marker.
