streptococcolysin

例句：

1. 1.The bacteria that cause strep throat produce this substance.
   引起咽喉炎的细菌会产生这种物质。
2. 2. The antibiotic treatment for strep throat is usually effective.
   治疗咽喉炎的抗生素通常有效。
3. 3. Researchers are studying the role of streptolysin in the immune system.
   研究人员正在研究链球菌溶素在免疫系统中的作用。