当一个杆菌即将形成芽孢时，细胞内便出现一粒带折射性的微小颗粒。
When a rod is about to sporulate a tiny refractile granule appears in the cell.
结果：PCR产物经琼脂糖凝胶电泳分析，仅在包含绿脓杆菌基因组DNA的样品中得到单一条带。
Results:A single band was obtained on agarose gel electrophoresis only from PCR products that contained genomic DNA of P. aeruginosa.
这一类型的大肠杆菌会释放一种强烈的毒素，并可能导致严重的肠道症状，如带血腹泻。
This E. Coli strain can produce a powerful toxin and may cause severe gut symptoms, like bloody diarrhoea.
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