FIG. 3.
Distribution of polymorphic aap domain B sizes in BSI strains, commensal strains from BMT patients, and commensal strains from healthy individuals. The frequency of a domain of ≤4,200 bp with 11 deduced repeats was significantly higher in BSI strains than in commensal isolates (P = 0.02; Yates' corrected chi-square test). The difference between BSI strains and commensal isolates from BMT patients was also statistically significant (P = 0.03; Yates' corrected chi-square test). The difference between BSI strains and commensal isolates from healthy individuals was near statistical significance (P = 0.06; Fisher exact test).