Demonstration of Two Cryptic Plasmids in Salmonella pullorum MS531

William L. Olsen, D. E. Schoenhard
1972 Journal of Bacteriology  
Two cryptic plasmids designated PO-1 and PO-2 that had molecular weights of 1.5 x 106 and 45 x 106 daltons, respectively, were isolated from Salmonella pullorum MS53. A 150 to 1 ratio of PO-1 to PO-2 plasmids was estimated to occur.
doi:10.1128/jb.110.2.786-788.1972 fatcat:flfv2mv7vraehojovs7iydaqci