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RAPD analysis of Enterobacter aerogenes and Klebsiella pneumoniae strains used in this study Lane M: DNA molecular weight marker (100 base pair ladder). The E. aerogenes RAPD-types are indicated as A, B, C and D and the K. pneumoniae types are indicated as K1 an K2. RAPD-type A corresponds to clone BEI, type B to clone BEII, type C to BEII-related clone and type D presents a strain unrelated to clones BEI and BEII. Negative image of ethidium bromide stained agarose electrophoresis
