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. 2000 Feb;68(2):543–549. doi: 10.1128/iai.68.2.543-549.2000

TABLE 5.

Preemptive colonization by wild-type and effector strains

Concn of challenge strain Ingbritt (CFU/ml) Frequency of superinfection in animals colonized by:
JH1140 BCS3-L1 Control
107  0/3 0/3 3/3
108  0/3 0/3 3/3
109  0/3 0/3 3/3
1010 0/3 0/3 3/3