Figure 4: C. ljungdahlii (A) syngas use in syngas reactors inoculated with cells pre-adapted on syngas. Squares denote CO2 concentrations, circles represent CO concentrations, and the triangles indicate H2 concentrations. (B) fructose use in syngas-fructose reactors inoculated with cells pre-adapted on fructose (circles), syngas-fructose (squares), and syngas (triangles).