Fig. 4From: Significantly improved solvent tolerance of Escherichia coli by global transcription machinery engineeringColony formation efficiency of various E. coli knockout and retro-complementary strains of a up-regulated genes and b down-regulated genes under 1 % (v/v) cyclohexane; c cell growth of knockout strains in absence of cyclohexane. The cultures were spotted in 10-fold dilutions and incubated at 37 °C for 24 hBack to article page