The stock culture strains E. cloacae (ATCC 49141, NR1, NR2, NR3 controls and R1-, R2-, R3-resistant strains) were subcultured twice on LB agar plates and then grown on MacConkey agar plates at 37 ...

Escherichia coli was markedly or completely inhibited on this citrate agar and did not change the color of the medium; while Aerobacter aerogenes grew luxuriantly forming large raised greenish-blue ...