Fig. 2

Growth curves and respiration measurements of transformants. a Growth curve of transformants in oxygen culture. b Growth curve of transformants with anaerobic induction. Cell density was determined at various time points at OD₆₀₀. Cells were cultured at 30 °C. Data were presented as the mean ± SE of triplicate. c Oxygen consumption detection of transformants. E. coli cells was measured at the time of induction and 2 h later in 2 ml at 37 °C. The results are the mean of three measurements