Fig. 2From: Combinatory optimization of chromosomal integrated mevalonate pathway for β-carotene production in Escherichia coli Cell mass and relative β-carotene production by E. coli strains with or without MVA pathway. a Cell mass. b Relative β-carotene production. β-carotene yield was compared to the parent strain QL105 and CAR001. Three repeats were performed for each strain, and the error bars represented standard deviationBack to article page