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. 2017 Jan 16;7:40117. doi: 10.1038/srep40117

Figure 4.

Figure 4

(a) Respiratory activity of C. jejuni 81–176 in Mueller-Hinton broth supplemented with different concentrations of formate, succinate, or fumarate under microaerobic conditions.. The respiratory activity was determined using CTC (5-cyano-2,3-ditolyltetrazolium chloride), which is reduced to formazan. This colorimetric reaction was then quantified using a spectrophotometer. (b) Respiratory activity of C. jejuni 81–176 in Mueller-Hinton broth supplemented with formate and nitrate. Anaero: <1% O2; Micro: 5% O2. 0: No formate added; 1N: Only 1 mM nitrate added; 5 F: 5 mM formate added; 5F + N: 5 mM formate and 1 mM nitrate added. Symbols indicate statistically significant differences (P < 0.05) in comparison to the control (No formate added). **Denotes the highest increase in respiration across all treatments.