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. 2003 Mar 17;197(6):735–742. doi: 10.1084/jem.20021153

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Copyright © 2003, The Rockefeller University Press

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Figure 3. — Lung colonization by SphB1 mutant strains. Balb/c mice were infected intranasally with ∼10⁵ CFU of B. pertussis BPRA (black bars), BPLC6 (white bars), BPLC8 (stippled bars), or BPDR (gray bars). At the indicated time points, mice were killed, and the viable bacteria present in the lungs were counted. Four mice were analyzed per time point for each group. *P < 0.05 relative to the BPRA values.