Figure 4From: A multicopy suppressor screening approach as a means to identify antibiotic resistance determinant candidates in Yersinia pestisEffect of robA Yp overexpression on organic solvent tolerance. Cultures of Y. pestis (Yp) and E. coli (Ec) strains carrying the plasmids indicated were spotted on solid medium. The surface of the medium was overlaid with the organic solvent and growth was recorded after incubation. H, n-hexane; CH, cyclohexane; P, n-pentane; X, p-xylene; DE, diphenyl ether; -, no solvent control.Back to article page