FIG. 2.

Growth curves of S. agalactiae NEM316, the sodA mutant, NEM1640, and the complemented strain, NEM1641, in BHI broth at 37°C under aerobic conditions with and without paraquat (10 mM). Strains and growth conditions are represented as follows: wild-type strain without (▴) or with 10 mM paraquat (▵); sodA mutant without (■) or with 10 mM paraquat (□); sodA-complemented mutant without (●) or with 10 mM paraquat (○). The results shown are representative of at least three independent experiments showing less than 10% variation.