Effect of reporter protein expression and protease chemical inhibitors on cell growth. Panels show plots of OD600 as a function of time for the following cultures: (A) 168, (B) WB800S, (C) BRB07, (D) BRB08, and (E) BRB14. These cells express: Cel8A (solid circles), Cel8A in media containing protease inhibitor cocktail (PIC) (open circles), Cel8A-LysM (solid squares), Cel8A-LysM expressed in media containing PIC (open squares). Assays were performed in triplicate. Error bars reflect the standard deviation.