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Sporulation-specific expression of sleL. Strains were incubated in modified G medium at 39°C for 7 h, during which samples were collected for β-galactosidase assays. Growth (filled symbols) and β-galactosidase activity (open symbols) were assayed for wild-type (circles) and DPBa27 (sleL-lacZ::pDPV350) (squares) B. anthracis. The graph is representative of three independent experiments.
