Figure 3
From: A rapid phage assay for detection of viable Mycobacterium avium subsp. paratuberculosis in milk

A schematic view of lysed plaques (3–4 nm) on Middlebrook (MB) 7H10 agar corresponding to MAP concentrations of 104 (A) and 102 (B) cfu/mL in an artificially contaminated milk sample (this photo was taken before the end of the overnight incubation (18-h) at 37 °C).