Figure 4From: Fixation of CO2 in Clostridium cellulovorans analyzed by 13C-isotopomer-based target metabolomics Lactate secretion accompanied with CO 2 fixation. (a) The time course of lactate concentration in cultivation supernatants. (b) The time course of relative fraction of lactate in cultivation supernatants. Relative fractions were calculated as described in Figure 2. Error bars represent standard deviations.Back to article page