Figure 2
From: Direct and convenient measurement of plasmid stability in lab and clinical isolates of E. coli

Schematic of the plasmid stability tests. Depicted are the key differences between the naïve (a), day zero (b), single colony (c), and Luria-Delbrück (d) tests. Of these, the first three are loss frequency tests, while the Luria-Delbrück assay is a loss rate test.