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Swimming of L. monocytogenes mutants in soft agar. The L. monocytogenes wild-type (WT) strain EGD and the ΔTCS-RR mutants were stabbed into semisolid agar plates with 0.25% agar and incubated at 24°C (A) or 37°C (B) for 24 h. The results for L. monocytogenes EGD and the ΔdegU, ΔcheY, and ΔresD mutants are presented. Pictures were taken with a standard digital camera (Camedia C300; OLYMPUS).
