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Gel electrophoresis analysis of CHO gene and cloning vector after double digestion by HindIII and PstI. Lane 2, recombinant plasmid containing CHO gene + STV28 (7300 bp); lane 4, undigested STV28 plasmid as control (5700 bp); lane 5, 1 kb ladder; lane 6, digested CHO gene with HindIII and PstI (1600 bp).
