FIG 7.

S. aureus growth in meropenem is facilitated by coculture with B. cenocepacia. Experiments were conducted in rich medium (Tryptone Soya Yeast Extract [TSYE] broth) in room air, in the presence or absence of 10 μg/mL meropenem and for each species either grown alone (monococulture) or together (coculture) in a 96-well plate with hourly shaking. At 0 and 48 h, cells were serially diluted and plated at concentrations of 10⁻² to 10⁻⁷ onto either mannitol salt agar (for S. aureus) or LB agar with 500 mg/L gentamicin (for B. cenocepacia).