在自然界 ,生物之间的拮抗关系是客观存在的 ,科研人员利用这种关系为医疗服务 ,用于治疗疾病。对一切病原菌 (致病菌 )都有可能通过两条途径以治之 :一是利用致病菌的天然拮抗体来治疗 ;二是籍助酶的特定功能来消灭病原体。就前者而言 ,如常见的肺炎病症是肺炎链球菌 (Ｓｔｒ In nature, the antagonistic relationship between living things is an objective reality. Researchers use this relationship to serve medical treatment and cure diseases. For all pathogenic bacteria (pathogens) are likely to have two ways to rule: First, the use of natural antagonists of pathogens to treat; the second is due to the specific function of enzymes to eliminate pathogens. In the former case, the common pneumonitis is Streptococcus pneumoniae (Str