Figure 9. Growth of chitinase and chitin binding protein deletion mutant strains of L. monocytogenes is not defective in broth culture. BHI broth was inoculated with wild-type (WT) and chitinase/ chitin binding protein deletion strains (ΔchiA, ΔchiB and Δlmo2467) of L. monocytogenes. Growth of the bacterial strains was monitored by taking the OD600 values of the cultures at different time points over a period of 10 hours.