Genotypic diversity of Streptococcus suis and the S. suis-like bacterium Streptococcus ruminantium in ruminants oleh Masatoshi Okura, Fumito Maruyama, Atsushi Ota, Takeshi Tanaka, Yohei Matoba, Aya Osawa, Sayed Mushtaq Sadaat, Makoto Osaki, Atsushi Toyoda, Yoshitoshi Ogura, Tetsuya Hayashi, Daisuke Takamatsu