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The ΔpbpA mutant is susceptible to killing by ceftriaxone. E. faecalis cells growing exponentially in MHB were treated with ceftriaxone. Samples were removed and enumerated for viability (A) and the OD600 determined (B) at intervals. Data represent the mean ± standard error from two independent experiments. Strains were wild-type, OG1; ΔpbpA, JL632; Δpbp5, JL339; and ΔpbpAcomp, DDJ241.
