Figure 5.

Recovery of Brucella cfu from livers one week after BALB/c mice were inoculated by gavage with the wild type strain 1330 or strain 1330Δure1KΔure2C with or without urea supplementation. P value for the difference among mean values was <0.025. The mean values that share the same symbol do not differ one another significantly; and the mean values designated by different symbols differ one another significantly.