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PCR-RFLP of B. quintana and B. henselae from clinical specimens. Lane 1, 50-bp ladder, lanes 2 to 4, B. quintana H93-176; lanes 5 to 7, B. henselae B92-007003; lane 8, blank; lanes 9 to 11, B. quintana B93-007356; lane 12, 50-bp ladder. PCR products were left uncut (lanes 2, 5, and 9) or were cut with DdeI (lanes 3, 6, and 10) or MseI (lanes 4, 7, and 11).
