FIG 3 .

(A) Expression of PNAG by the indicated strains of Y. pestis grown in BHIB at the temperatures indicated in individual panels as determined by FACS. Dark gray trace, reactivity with control MAb F429 to P. aeruginosa alginate. Light gray trace, reactivity with PNAG-specific MAb F598. (B) Quantitative analysis of fluorescence intensity of Y. pestis strains reacted with either control MAb F429 (black bars) or MAb F598 to PNAG (gray bars). Bars indicate means, and error bars indicate the standard errors of the means.