Fig. 7.

The ability of Y. pestis chaperone/usher mutants to form hms-independent biofilms. KIM5 derivatives were grown in PMH2 minimal medium (Gong et al., 2001) at 28 °C pH 7 (a), 37 °C pH 7 (b) or 37 °C pH 6 (c) and processed as described for E. coli. For Y. pestis, raw data for OD₅₉₅/bacterial density are presented without normalization. *P=0.00001.