Results of a Southern hybridization experiment with an IS2112-specific probe and EcoRI-digested total DNA of strains GJ70 (lane 3), HA1 (lane 4), m15-3 (lane 5), NCIMB13064 (lane 6), Y2 (lane 7), and TB2 (lane 8). Lane 1 contained the same markers as lane 7 in Fig. 3. EcoRI-digested total DNA of P. pavonaceae 170 was used as a negative control (lane 2).