FIG. 3.

(a) Agarose gel showing the PFGE patterns of S. enterica serovar Typhi relapse isolates. (A) XbaI cleavage patterns. Lane 1, RR1-A and RR1-R; lane 2, RR2-A and RR2-R; lane 3, RR3-A and RR3-R; lane 4, RR4-A and RR4-R; lane 5, RR5-A and RR5-R; lane 6, RR6-A and RR6-R; lane 7, RR7-A and RR7-R; lane 8, RR8-A and RR8-R; lane 9, RR9-A and RR9-R; lane 10, RR10-A and RR10-R. A, strain from acute-phase sample; R, strain from relapse-phase sample. (B) BlnI cleavage patterns of the same DNA preparations described for panel A. Lane M, bacteriophage lambda concatamer molecular size marker, with the sizes of the DNA fragments (in kilobase pairs) indicated to the left of the figure. (b) Cartoon interpretation of the panels in part a of the figure. Arrows indicate differences between RR4-A and RR4-R.