FIG 1.
Plaque formation and host cell lysis by P. larvae-specific bacteriophage HB10c2. (A) Titration assay to determine the lytic activity of phage HB10c2 against P. larvae genotype ERIC II on top agar. (B) Growth of P. larvae ERIC I to IV (continuous lines) and effect of phage HB10c2 on bacterial growth (dotted lines) in BHI liquid medium. Phage HB10c2 had a significant effect (unpaired Student t test, P < 0.05) on the growth of ERIC I (P = 1.91 × 10−10), ERIC II (P = 3.06 × 10−7), ERIC III (P = 1.72 × 10−8), and ERIC IV (P = 7.12 × 10−4).