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Growth of mixed population of C. heintzii and E. coli in relation to cell number with defined mixtures of lactose and glucose in a carbon-limited continuous culture at D=0.075 h−1 and 30 °C with a total carbon feed of 50 mg l−1. Percentage of E. coli in the bacterial population (▪) and steady-state lactose concentration (○) is shown as a function of the percentage of lactose in the feed medium.
