Thus organisms capable of lactose fermentation such as Escherichia coli, form bright pinky-red colonies (plate pictured on the left here). MacConkey agar is commonly used to differentiate between the ...

transform separately pET11a-link-NGFP and pMRBAD-link-CGFP into an E. coli strain that gives high-quality plasmid DNA (for example, DH10B or XL1-Blue) and plate onto selective agar media.

Thus organisms capable of lactose fermentation such as Escherichia coli, form bright pinky-red colonies (plate pictured on the left here). MacConkey agar is commonly used to differentiate between the ...