Figure 7From: A new experimental approach for studying bacterial genomic island evolution identifies island genes with bacterial host-specific expression patternsExpression of PR4318 and ΔPR 4318 lacZ constructs in a range of Gram negative host backgrounds. Analysis of PR4318 and Δ PR4318 lacZ fusion activity was performed as in Figure 6, except that the indicated hosts represent a range of bacterial genera of varying evolutionary relationships to S. typhimurium.Back to article page