Table 2.

Minimum inhibitory concentrations for Imipenem (µg·mL⁻¹) of the different mutants in the absence of metal or supplemented with 0.5 mM ZnCl₂ or 2.5 mM CuSO₄.

Strain	Medium Supplemented with:
	No Metal	Zn	Cu
WT	1	16	>32
ΔczcRS	1	3	>32
hfq−	0.38	2	4
ΔczcRS;hfq−	0.25	0.38	2