Figure 1.

Separation of total DNA of Arthrobacter sp. Rue61a by pulsed-field gel electrophoresis. Lane 1: Concatemers of bacteriophage λ DNA; lane 2: DNA from Arthrobacter sp. Rue61a cells, embedded in agarose plugs and treated with proteinase K after lysis. Filled and open arrowheads indicate the plasmids pARUE232 and pARUE113, respectively.