6Baele M, Vanrobaeys M, Vaneechoutte M, et al. Genomic finger printing of pigeon Streptococcus gallolyticus strains of different virulence by randomly amplified polymorphic DNA (RAPD) analysis[J].Vet Microbiol,2000,71 (1 - 2) :103-311.
7NortonPM, RolphC, WardPN, et al.Epithelial invation and cell lysis by virulent strains of Streptococcus suis is enhanced by the presence of suilysin [ J ]. FE MS Immunol Med Microbiol,1999,26(1) :25-35.