coli strain that gives high-quality plasmid DNA (for example, DH10B or XL1-Blue) and plate onto selective agar media. Select for cells carrying the pET11a constructs in the presence of 100 μg/ml ...

Bacteria are micro-organisms, and individual cells cannot be seen without a microscope. However, when grown on agar in a Petri dish, each individual cell divides multiple times to form a visible ...