Figure 2
From: Global regulation of gene expression in response to cysteine availability in Clostridium perfringens

Growth of C. perfringens strain 13 in the presence of various sulfur sources. Growth curves of strain 13 grown in a sulfur-free minimal medium in the presence of 1 mM sulfite (■), 1 mM glutathione (□), 0.5 mM cystine (●), 1 mM homocysteine (○), 1 mM methionine (▲) or in the absence of any sulfur source (△). We observed a similar growth for homocysteine and cystathionine, thiosulfate and cystine or sulfide and sulfite.