Figure 1.

Effect of hydroxyurea and vitamin B₁₂ on P. aeruginosa PAO1 wild-type, ΔnrdJ, ΔnrdD, ΔnrdJΔnrdD, and ΔcobN strain growth. Five-microliter drops were plated from a 0, 10⁻⁴, and 10⁻⁸ dilution into a solid medium containing 30 mM hydroxyurea (HU) and 1 μg/ml vitamin B₁₂ (vit B₁₂) for 48 h. Pictures represent three independent experiments.