Active cultures of strains 630Δerm and Δskin (MC1041) were diluted in A) BHIS, or BHIS supplemented with B) 60 μg/ml cefoperazone, C) 0.15 μg/ml teicoplanin, D) 10 μg/ml nisin, E) 1 μg/ml vancomycin, or F) 2.5 μg/ml LL-37. Graphs represent the mean OD600 readings from three independent replicates with error bars showing the standard error of the mean. Data were analyzed by Student’s t-test comparing 630Δerm to Δskin at each time point with Holm-Sidak correction for multiple tests. No statistically significant differences were observed for growth in any antibiotic at any time point.