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B. abortus-prpA displayed reduced persistence in mice. BALB/c mice were infected i.p. with B. abortus 2308 or B. abortus-prpA. At different weeks after infection, the numbers of cfu recovered from the spleens were determined by serial dilutions and plating. Results are expressed as log units. At least three animals were used for each determination. ∗ and ∗∗, Significant difference between the groups (P < 0.05).
