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Southern analysis of chromosomal DNA from K. kingae (Kk) strains 269-492, 23330, 23332, 97-982, and 05-001-1817, the K. denitrificans type strain, the K. oralis type strain, and E. coli DH5α, using a 0.9-k fragment containing rtxC and the 5′ end of rtxA from K. kingae strain 269-492 as a probe.
