Keywords Ictalurus punctatus;Stenotrophomonas maltophilia;Extracellular protease;chemical modification;pathogenicity;PCR diagnosis;in situ PCR;pathology;

• 关键词斑点叉尾鮰;嗜麦芽寡养单胞菌;胞外蛋白酶;化学修饰;致病性;PCR诊断;原位PCR;病理学;