结论EBV相关胃癌和EBV阳性鼻咽癌组织中病毒潜伏期基因启动子的甲基化状态不同，甲基化是调控EBV潜伏期基因启动子活动的重要机制之一。
Conclusion The methylation status of EBV latent gene promoters in EBVaGC and NPC is different, methylation is one of important mechanisms in regularing the activity of EBV latent gene promoters.
而不少微小病变潜伏期较长，一旦有所显示时，则会演变为牙龈癌等无法治愈的口腔疾病。
And many small lesions longer incubation period, once the display will be turned into gum cancer and other incurable oral disease.
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