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. 1998 Dec;66(12):5607–5612. doi: 10.1128/iai.66.12.5607-5612.1998

FIG. 2.

FIG. 2

Susceptibility of B. bronchiseptica and B. pertussis wild-type and mutant strains to various cationic peptides as determined in radial diffusion assays. (A) Comparison of wild-type B. bronchiseptica BB7865, B. pertussis Tohama I, and their bvg mutant derivatives, BB7866 and BP347, respectively. Stars above the bars indicate statistically significant differences in growth inhibition of the various strains in comparison to that of the B. bronchiseptica phase-variant strain BB7866 (P < 0.01). (B) Comparison of wild-type B. bronchiseptica BB7865, its phase variant BB7866, and transposon-induced protamine-sensitive mutants (BB-PS1 to BB-PS3) in radial diffusion assays. Stars above the bars indicate statistically significant differences in growth inhibition of the various strains in comparison to that of the B. bronchiseptica wild-type strain, BB7865 (P < 0.01).