FIG. 2.

Kinetics of transcription of a chromosomal hla::lacZ fusion with growth in the presence of methicillin (A) and clindamycin (B) (drugs are indicated by gray bars and open squares) and a control without antibiotic (black bars and open diamonds). β-Galactosidase activity, indicated by bars, is expressed in relative light units (RLU). Means ± standard deviations for four experiments are given. Lines with squares and diamonds indicate representative growth, as measured by the optical density at 600 nm (OD₆₀₀). Growth experiments were repeated four times.