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. 2010 Dec 17;5(12):e14379. doi: 10.1371/journal.pone.0014379

Figure 1. Effect of the Y. pestis Ybt on transmission by fleas.

Figure 1

Incidence and time to terminal disease in mice bitten by fleas infected with Y. pestis wild type (open squares) or the Δirp2 mutant (open circles).