Figure 4.

Growth curve of S. suis strain 10 and mutant derivatives under different environmental conditions. Bacteria were cultured in THB medium (a, d, e, f) at 37̊C, (b) at 42̊C and (c) at 34̊C in presence of (d) 5 mM NaF, (e) 2 mM H₂O₂ and (f) 1 mM of Bipyridyl, and the optical density at 600 nm (OD₆₀₀) was measured every 20 minutes over a time course of 18 hours.