streptobacterin

例句：

1. 1. Thebacteria that cause streptococcal infections are resistant to antibiotics.
   引起链球菌感染的细菌对抗生素有抗药性。
2. 2. The patient's blood tests showed elevated levels of streptococcal toxin.
   患者的血液测试显示链球菌毒素水平升高。
3. 3. The research team discovered a new strain of streptococcus that produces streptobacterin.
   研究小组发现了一种新菌株，能产生链球菌素。