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Table 3 Splenic recovery of B. suis strains six weeks after intraperitoneal inoculation in BALB/c mice

From: Brucella suis urease encoded by ure 1 but not ure 2 is necessary for intestinal infection of BALB/c mice

Strain Injected dosage (log10 cfu/mouse) cfu 6 weeks after inoculation (log10/spleen)a
Trial-1   
1330 (wild) 5.24 4.41 ± 0.18†
1330Δure 1K 5.24 4.61 ± 0.20†
1330Δure 2K 5.22 4.40 ± 0.18†
1330ΔctpA (control) 5.25 2.04 ± 0.89‡
Trial-2   
1330 (wild) 4.11 4.25 ± 0.23
1330Δure 2C 4.16 4.17 ± 0.25
1330Δure 1KΔure 2C 4.28 4.19 ± 0.31
  1. aIn Trial-1:P value for the difference among mean values was <0.005. The mean value of a strain designated by a dagger (†) is significantly different from the mean value of a strain designated by a double dagger (‡) but is not significantly different between strains designated by the same symbol.
  2. In Trial-2: The observed significance level among mean values was < 0.1 <P < 0.9.